diff --git a/admin/index.go b/admin/index.go
index daa9691e..6e51bfa3 100644
--- a/admin/index.go
+++ b/admin/index.go
@@ -65,8 +65,8 @@ const indextpl = `<!DOCTYPE html>
 	<ul ng-if="box.list">
 	  <li ng-repeat="i in box.list">{{"{{ i }}"}}</li>
 	</ul>
-        <button class="btn btn-sm btn-success" ng-if="box.yes || box.no" ng-click="box.yes()">Yes</button>
-        <button class="btn btn-sm btn-danger" ng-if="box.yes || box.no" ng-click="box.no()">No</button>
+        <button type="button" class="btn btn-sm btn-success" ng-if="box.yes || box.no" ng-click="box.yes()">Yes</button>
+        <button type="button" class="btn btn-sm btn-danger" ng-if="box.yes || box.no" ng-click="box.no()">No</button>
       </div>
     </div>
 
diff --git a/admin/static/index.html b/admin/static/index.html
index b4c33e5b..c855f67c 100644
--- a/admin/static/index.html
+++ b/admin/static/index.html
@@ -63,8 +63,8 @@
 	<ul ng-if="box.list">
 	  <li ng-repeat="i in box.list">{{ i }}</li>
 	</ul>
-        <button class="btn btn-sm btn-success" ng-if="box.yes || box.no" ng-click="box.yes()">Yes</button>
-        <button class="btn btn-sm btn-danger" ng-if="box.yes || box.no" ng-click="box.no()">No</button>
+        <button type="button" class="btn btn-sm btn-success" ng-if="box.yes || box.no" ng-click="box.yes()">Yes</button>
+        <button type="button" class="btn btn-sm btn-danger" ng-if="box.yes || box.no" ng-click="box.no()">No</button>
       </div>
     </div>
 
diff --git a/admin/static/views/claim-list.html b/admin/static/views/claim-list.html
index 57668cec..028e301e 100644
--- a/admin/static/views/claim-list.html
+++ b/admin/static/views/claim-list.html
@@ -1,6 +1,6 @@
 <h2>
   Tâches et réclammations ({{ claims.length }})
-  <button ng-click="show('new')" class="float-right btn btn-sm btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter une tâche</button>
+  <button type="button" ng-click="show('new')" class="float-right btn btn-sm btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter une tâche</button>
   <small style="height: 0px;">
     <div class="btn-group btn-group-toggle float-right mr-2">
       <label class="btn btn-sm btn-secondary" ng-class="{active: showOnlyUnassigned, 'btn-warning': showOnlyUnassigned}">
@@ -49,7 +49,7 @@
 <div ng-controller="AssigneesListController">
   <h2>
     Assignables à
-    <button ng-click="newAssignee()" class="float-right btn btn-sm btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter une personne</button>
+    <button type="button" ng-click="newAssignee()" class="float-right btn btn-sm btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter une personne</button>
   </h2>
   <table class="table table-hover table-bordered table-striped table-sm">
     <thead class="thead-dark">
@@ -69,9 +69,9 @@
 	  <input type="text" class="form-control form-control-sm" ng-model="a.name" ng-if="!a.id || a.edit">
 	</td>
 	<td style="width: 10%;">
-	  <button class="btn btn-sm btn-info" ng-if="a.id" ng-click="setMyAId(a.id)" ng-class="{'disabled': whoami == a.id}"><span class="glyphicon glyphicon-user"></span></button>
-	  <button class="btn btn-sm btn-danger" ng-if="a.id && !a.edit" ng-click="removeAssignee(a)"><span class="glyphicon glyphicon-remove"></span></button>
-	  <button class="btn btn-sm btn-success" ng-if="!a.id || a.edit" ng-click="updateAssignee(a)"><span class="glyphicon glyphicon-ok"></span></button>
+	  <button type="button" class="btn btn-sm btn-info" ng-if="a.id" ng-click="setMyAId(a.id)" ng-class="{'disabled': whoami == a.id}"><span class="glyphicon glyphicon-user"></span></button>
+	  <button type="button" class="btn btn-sm btn-danger" ng-if="a.id && !a.edit" ng-click="removeAssignee(a)"><span class="glyphicon glyphicon-remove"></span></button>
+	  <button type="button" class="btn btn-sm btn-success" ng-if="!a.id || a.edit" ng-click="updateAssignee(a)"><span class="glyphicon glyphicon-ok"></span></button>
 	</td>
       </tr>
     </tbody>
diff --git a/admin/static/views/claim.html b/admin/static/views/claim.html
index 69e4521a..7f9c9c65 100644
--- a/admin/static/views/claim.html
+++ b/admin/static/views/claim.html
@@ -21,7 +21,7 @@
   </div>
   <div class="text-right" ng-show="claim.id">
     <button type="submit" class="btn btn-primary"><span class="glyphicon glyphicon-save" aria-hidden="true"></span> Save</button>
-    <button class="btn btn-danger" ng-click="deleteClaim()"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span> Delete</button>
+    <button type="button" class="btn btn-danger" ng-click="deleteClaim()"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span> Delete</button>
   </div>
   <div class="text-right" ng-show="!claim.id">
     <button type="submit" class="btn btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter la tâche</button>
diff --git a/admin/static/views/event-list.html b/admin/static/views/event-list.html
index 72ecef43..aa91a755 100644
--- a/admin/static/views/event-list.html
+++ b/admin/static/views/event-list.html
@@ -1,7 +1,7 @@
 <h2>
   &Eacute;vénements
-  <button ng-click="clearEvents()" class="float-right btn btn-sm btn-danger"><span class="glyphicon glyphicon-remove-sign" aria-hidden="true"></span> Vider la liste</button>
-  <button ng-click="show('new')" class="float-right btn btn-sm btn-primary mr-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter un événement</button>
+  <button type="button" ng-click="clearEvents()" class="float-right btn btn-sm btn-danger"><span class="glyphicon glyphicon-remove-sign" aria-hidden="true"></span> Vider la liste</button>
+  <button type="button" ng-click="show('new')" class="float-right btn btn-sm btn-primary mr-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter un événement</button>
 </h2>
 
 <p><input type="search" class="form-control" placeholder="Search" ng-model="query" autofocus></p>
diff --git a/admin/static/views/event.html b/admin/static/views/event.html
index a6bf8b49..7223c3b8 100644
--- a/admin/static/views/event.html
+++ b/admin/static/views/event.html
@@ -12,7 +12,7 @@
   </div>
   <div class="text-right" ng-show="event.id">
     <button type="submit" class="btn btn-primary"><span class="glyphicon glyphicon-save" aria-hidden="true"></span> Save</button>
-    <button class="btn btn-danger" ng-click="deleteEvent()"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span> Delete</button>
+    <button type="button" class="btn btn-danger" ng-click="deleteEvent()"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span> Delete</button>
   </div>
   <div class="text-right" ng-show="!event.id">
     <button type="submit" class="btn btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter l'événement</button>
diff --git a/admin/static/views/exercice-list.html b/admin/static/views/exercice-list.html
index b8bd9698..aafc6ae4 100644
--- a/admin/static/views/exercice-list.html
+++ b/admin/static/views/exercice-list.html
@@ -1,5 +1,5 @@
 <h2>Exercices
-  <button ng-click="syncFull()" ng-class="{'disabled': inSync}" class="float-right btn btn-sm btn-secondary"><span class="glyphicon glyphicon-refresh" aria-hidden="true"></span> Synchroniser</button>
+  <button type="button" ng-click="syncFull()" ng-class="{'disabled': inSync}" class="float-right btn btn-sm btn-secondary"><span class="glyphicon glyphicon-refresh" aria-hidden="true"></span> Synchroniser</button>
   <small style="height: 0px;">
     <div class="btn-group btn-group-toggle float-right mr-2">
       <label class="btn btn-sm btn-secondary" ng-class="{active: syncFiles, 'btn-warning': syncFiles}">
diff --git a/admin/static/views/exercice.html b/admin/static/views/exercice.html
index 6dedba68..7b3092d2 100644
--- a/admin/static/views/exercice.html
+++ b/admin/static/views/exercice.html
@@ -17,7 +17,7 @@
     </div>
     <div class="text-right" ng-show="exercice.id">
       <button type="submit" class="btn btn-primary"><span class="glyphicon glyphicon-save" aria-hidden="true"></span> Save</button>
-      <button class="btn btn-danger" ng-click="deleteExercice()"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span> Delete</button>
+      <button type="button" class="btn btn-danger" ng-click="deleteExercice()"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span> Delete</button>
     </div>
     <div class="text-right" ng-show="!exercice.id">
       <button type="submit" class="btn btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Create exercice</button>
@@ -31,15 +31,15 @@
       </div>
       <div class="list-group" ng-show="showDownloads">
 	<div class="list-group-item bg-light text-dark" style="padding: 2px">
-	  <button ng-click="syncFiles()" class="btn btn-sm btn-light ml-2"><span class="glyphicon glyphicon-refresh" aria-hidden="true"></span> Synchroniser</button>
-	  <button ng-click="addFile()" class="btn btn-sm btn-primary ml-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter</button>
+	  <button type="button" ng-click="syncFiles()" class="btn btn-sm btn-light ml-2"><span class="glyphicon glyphicon-refresh" aria-hidden="true"></span> Synchroniser</button>
+	  <button type="button" ng-click="addFile()" class="btn btn-sm btn-primary ml-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter</button>
 	</div>
 	<form ng-submit="saveFile()" class="list-group-item bg-light text-dark" ng-repeat="file in files">
 	  <div class="row form-group">
 	    <input type="text" ng-model="file.name" class="col form-control form-control-sm" placeholder="Nom de fichier">
 	    <a href="{{file.path}}" class="btn btn-sm btn-secondary col-auto"><span class="glyphicon glyphicon-download" aria-hidden="true"></span></a>
 	    <button type="submit" class="btn btn-sm btn-success col-auto"><span class="glyphicon glyphicon-ok" aria-hidden="true"></span></button><br>
-	    <button ng-click="deleteFile()" class="btn btn-sm btn-danger col-auto"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span></button>
+	    <button type="button" ng-click="deleteFile()" class="btn btn-sm btn-danger col-auto"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span></button>
 	  </div>
 	  <div class="cksum">
 	    Taille&nbsp;: <span title="{{ file.size }} octets">{{ file.size | size }}</span> &dash;
@@ -51,8 +51,8 @@
 
     <div class="mt-2 card border-info" ng-controller="ExerciceHintsController" ng-show="exercice.id">
       <div class="card-header bg-info text-light">
-	<button ng-click="addHint()" class="float-right btn btn-sm btn-primary ml-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span></button>
-	<button ng-click="syncHints()" class="float-right btn btn-sm btn-light ml-2"><span class="glyphicon glyphicon-refresh" aria-hidden="true"></span></button>
+	<button type="button" ng-click="addHint()" class="float-right btn btn-sm btn-primary ml-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span></button>
+	<button type="button" ng-click="syncHints()" class="float-right btn btn-sm btn-light ml-2"><span class="glyphicon glyphicon-refresh" aria-hidden="true"></span></button>
 	<h4 class="m-0" ng-click="toggleHints()"><small class="glyphicon" ng-class="{'glyphicon-chevron-right': !showHints, 'glyphicon-chevron-down': showHints}" aria-hidden="true"></small> Indices</h4>
       </div>
       <div class="list-group" ng-show="showHints">
@@ -72,7 +72,7 @@
 	    </div>
 	    <div class="col-4">
 	      <button type="submit" class="btn btn-sm btn-success"><span class="glyphicon glyphicon-ok" aria-hidden="true"></span></button>
-	      <button ng-click="deleteHint()" class="btn btn-sm btn-danger" ng-show="hint.id"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span></button>
+	      <button type="button" ng-click="deleteHint()" class="btn btn-sm btn-danger" ng-show="hint.id"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span></button>
 	    </div>
 	  </div>
 	</form>
@@ -81,8 +81,8 @@
 
     <div class="mt-2 card border-success" ng-controller="ExerciceFlagsController" ng-show="exercice.id">
       <div class="card-header bg-success border-success text-light">
-	<button ng-click="addFlag()" class="float-right btn btn-sm btn-primary ml-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span></button>
-	<button ng-click="syncFlags()" class="float-right btn btn-sm btn-light ml-2"><span class="glyphicon glyphicon-refresh" aria-hidden="true"></span></button>
+	<button type="button" ng-click="addFlag()" class="float-right btn btn-sm btn-primary ml-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span></button>
+	<button type="button" ng-click="syncFlags()" class="float-right btn btn-sm btn-light ml-2"><span class="glyphicon glyphicon-refresh" aria-hidden="true"></span></button>
 	<h4 class="m-0" ng-click="toggleFlags()"><small class="glyphicon" ng-class="{'glyphicon-chevron-right': !showFlags, 'glyphicon-chevron-down': showFlags}" aria-hidden="true"></small> Drapeaux</h4>
       </div>
       <div class="list-group" ng-show="showFlags">
@@ -90,7 +90,7 @@
 	  <div class="row" id="flag-{{flag.id}}">
 	    <input type="text" id="klabel{{flag.id}}" ng-model="flag.label" class="col form-control form-control-sm" placeholder="Intitulé" title="Intitulé">
 	    <div class="col-auto" ng-show="flag.id">
-	      <button ng-click="deleteFlag()" class="btn btn-sm btn-danger"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span></button>
+	      <button type="button" ng-click="deleteFlag()" class="btn btn-sm btn-danger"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span></button>
 	    </div>
 	  </div>
 	  <div class="row">
@@ -116,7 +116,7 @@
 
     <div class="mt-2 card border-success" ng-controller="ExerciceMCQFlagsController" ng-show="exercice.id">
       <div class="card-header bg-success text-light">
-	<button ng-click="addQuiz()" class="float-right btn btn-sm btn-primary ml-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span></button>
+	<button type="button" ng-click="addQuiz()" class="float-right btn btn-sm btn-primary ml-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span></button>
 	<h4 class="m-0" ng-click="toggleQuizz()"><small class="glyphicon" ng-class="{'glyphicon-chevron-right': !showQuizz, 'glyphicon-chevron-down': showQuizz}" aria-hidden="true"></small> Quizz</h4>
       </div>
       <div class="list-group" ng-show="showQuizz">
diff --git a/admin/static/views/file-list.html b/admin/static/views/file-list.html
index 92f6eb95..5acfc27d 100644
--- a/admin/static/views/file-list.html
+++ b/admin/static/views/file-list.html
@@ -1,7 +1,7 @@
 <h2>
   Fichiers
   <small class="text-muted" ng-if="errfnd > 0"><span class="glyphicon glyphicon-exclamation-sign"></span> <ng-pluralize count="errfnd" when="{'one': '{} erreur trouvée', 'other': '{} erreurs trouvées'}"></ng-pluralize></small>
-  <button ng-click="checksumAll()" class="float-right btn btn-sm btn-secondary"><span class="glyphicon glyphicon-flash" aria-hidden="true"></span> Vérifier les fichiers</button>
+  <button type="button" ng-click="checksumAll()" class="float-right btn btn-sm btn-secondary"><span class="glyphicon glyphicon-flash" aria-hidden="true"></span> Vérifier les fichiers</button>
 </h2>
 
 <p><input type="search" class="form-control" placeholder="Search" ng-model="query" autofocus></p>
diff --git a/admin/static/views/pki.html b/admin/static/views/pki.html
index 3222c6da..32926d74 100644
--- a/admin/static/views/pki.html
+++ b/admin/static/views/pki.html
@@ -1,6 +1,6 @@
 <h2>
   Certificats clients
-  <button ng-click="generateCert()" class="float-right btn btn-sm btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Générer un certificat</button>
+  <button type="button" ng-click="generateCert()" class="float-right btn btn-sm btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Générer un certificat</button>
 </h2>
 
 <p><input type="search" class="form-control" placeholder="Search" ng-model="query" autofocus></p>
@@ -110,7 +110,7 @@
   Autorité de certification
   <span class="badge badge-success" ng-if="ca.version">Générée</span>
   <span class="badge badge-danger" ng-if="!ca.version">Introuvable</span>
-  <button ng-click="generateCA()" class="float-right btn btn-sm btn-primary" ng-if="!ca.version"><span class="glyphicon glyphicon-certificate" aria-hidden="true"></span> Générer</button>
+  <button type="button" ng-click="generateCA()" class="float-right btn btn-sm btn-primary" ng-if="!ca.version"><span class="glyphicon glyphicon-certificate" aria-hidden="true"></span> Générer</button>
 </h2>
 
 <div class="alert alert-info" ng-if="!ca.version">
diff --git a/admin/static/views/public.html b/admin/static/views/public.html
index 5a8d4faf..134872d8 100644
--- a/admin/static/views/public.html
+++ b/admin/static/views/public.html
@@ -3,7 +3,7 @@
     Interface publique
     <select class="custom-select" id="screenid" ng-model="screenid" ng-options="k as 'Écran ' + v for (k, v) in screens" ng-change="chScreen()"></select>
     <div class="float-right dropdown">
-      <button class="btn btn-secondary dropdown-toggle mr-sm-2" type="button" data-toggle="dropdown">
+      <button type="button" class="btn btn-secondary dropdown-toggle mr-sm-2" type="button" data-toggle="dropdown">
 	Charger scène
       </button>
       <div class="dropdown-menu">
@@ -45,9 +45,9 @@
 	    <span class="custom-control-description">Masquer</span>
 	  </label>
 	</div>
-	<button ng-click="upScene(scene)" class="btn btn-sm btn-light mb-2 mr-sm-2 mb-sm-0"><span class="glyphicon glyphicon-chevron-up" aria-hidden="true"></span></button>
-	<button ng-click="downScene(scene)" class="btn btn-sm btn-light mb-2 mr-sm-2 mb-sm-0"><span class="glyphicon glyphicon-chevron-down" aria-hidden="true"></span></button>
-	<button ng-click="delScene(scene)" class="btn btn-sm btn-warning mb-2 mr-sm-2 mb-sm-0"><span class="glyphicon glyphicon-minus" aria-hidden="true"></span> Supprimer</button>
+	<button type="button" ng-click="upScene(scene)" class="btn btn-sm btn-light mb-2 mr-sm-2 mb-sm-0"><span class="glyphicon glyphicon-chevron-up" aria-hidden="true"></span></button>
+	<button type="button" ng-click="downScene(scene)" class="btn btn-sm btn-light mb-2 mr-sm-2 mb-sm-0"><span class="glyphicon glyphicon-chevron-down" aria-hidden="true"></span></button>
+	<button type="button" ng-click="delScene(scene)" class="btn btn-sm btn-warning mb-2 mr-sm-2 mb-sm-0"><span class="glyphicon glyphicon-minus" aria-hidden="true"></span> Supprimer</button>
       </div>
     </div>
 
diff --git a/admin/static/views/team-edit.html b/admin/static/views/team-edit.html
index ab560e30..17956d79 100644
--- a/admin/static/views/team-edit.html
+++ b/admin/static/views/team-edit.html
@@ -1,6 +1,6 @@
 <h1>
   {{ team.name }}
-  <button ng-click="showStats()" class="float-right btn btn- btn-primary" ng-if="team.id">
+  <button type="button" ng-click="showStats()" class="float-right btn btn- btn-primary" ng-if="team.id">
     <span class="glyphicon glyphicon-list" aria-hidden="true"></span>
     Statistiques
   </button>
@@ -25,7 +25,7 @@
   </div>
   <div class="text-right" ng-show="team.id">
     <button type="submit" class="btn btn-success"><span class="glyphicon glyphicon-save" aria-hidden="true"></span> Save</button>
-    <button class="btn btn-danger" ng-click="deleteTeam()"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span> Delete</button>
+    <button type="button" class="btn btn-danger" ng-click="deleteTeam()"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span> Delete</button>
   </div>
   <div class="text-right" ng-show="!team.id">
     <button type="submit" class="btn btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Create team</button>
@@ -39,7 +39,7 @@
     <div class="card-header bg-info text-light">
       <button type="submit" class="float-right btn btn-sm btn-primary ml-2">
 	<span class="glyphicon glyphicon-save" aria-hidden="true"></span> Save</button>
-      <button ng-click="newMember()" class="float-right btn btn-sm btn-secondary ml-2">
+      <button type="button" ng-click="newMember()" class="float-right btn btn-sm btn-secondary ml-2">
 	<span class="glyphicon glyphicon-plus" aria-hidden="true"></span></button>
       <h4 class="m-0"><span class="glyphicon glyphicon-user" aria-hidden="true"></span> Membres</h4>
     </div>
@@ -53,7 +53,7 @@
 	  <input type="text" class="form-control form-control-sm" id="{{ field }}{{ member.id }}" ng-model="member[field]">
 	</div>
 	<div class="col-sm-2" ng-if="$first">
-	  <button ng-click="removeMember(member)" class="float-right btn btn-sm btn-primary"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span></button>
+	  <button type="button" ng-click="removeMember(member)" class="float-right btn btn-sm btn-primary"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span></button>
 	</div>
       </div>
     </div>
@@ -112,7 +112,7 @@
 	  <span ng-if="!row.secondary_title && row.secondary && row.kind != 'solved'">: {{ row.secondary }}</span>
 	</td>
 	<td style="vertical-align: middle; padding: 0">
-	  <button ng-click="delHistory(row)" class="float-right btn btn-sm btn-danger"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span></button>
+	  <button type="button" ng-click="delHistory(row)" class="float-right btn btn-sm btn-danger"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span></button>
 	</td>
       </tr>
     </tbody>
diff --git a/admin/static/views/team-list.html b/admin/static/views/team-list.html
index c82684d5..77de2f1b 100644
--- a/admin/static/views/team-list.html
+++ b/admin/static/views/team-list.html
@@ -1,8 +1,8 @@
 <h2>
   &Eacute;quipes
-  <button ng-click="show('new')" class="float-right btn btn-sm btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter une équipe</button>
-  <button ng-click="show('print')" class="float-right btn btn-sm btn-secondary mr-2"><span class="glyphicon glyphicon-print" aria-hidden="true"></span> Imprimer les équipes</button>
-  <button ng-click="show('export')" class="float-right btn btn-sm btn-secondary mr-2"><span class="glyphicon glyphicon-export" aria-hidden="true"></span> Statistiques générales</button>
+  <button type="button" ng-click="show('new')" class="float-right btn btn-sm btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter une équipe</button>
+  <button type="button" ng-click="show('print')" class="float-right btn btn-sm btn-secondary mr-2"><span class="glyphicon glyphicon-print" aria-hidden="true"></span> Imprimer les équipes</button>
+  <button type="button" ng-click="show('export')" class="float-right btn btn-sm btn-secondary mr-2"><span class="glyphicon glyphicon-export" aria-hidden="true"></span> Statistiques générales</button>
 </h2>
 
 <p><input type="search" class="form-control" placeholder="Search" ng-model="query" autofocus></p>
diff --git a/admin/static/views/theme-list.html b/admin/static/views/theme-list.html
index 7d93002c..ad642ca9 100644
--- a/admin/static/views/theme-list.html
+++ b/admin/static/views/theme-list.html
@@ -1,7 +1,7 @@
 <h2>
   Thèmes
-  <button ng-click="show('new')" class="float-right btn btn-sm btn-primary ml-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter un thème</button>
-  <button ng-click="sync()" ng-class="{'disabled': inSync}" class="float-right btn btn-sm btn-secondary ml-2"><span class="glyphicon glyphicon-refresh" aria-hidden="true"></span> Synchroniser</button>
+  <button type="button" ng-click="show('new')" class="float-right btn btn-sm btn-primary ml-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter un thème</button>
+  <button type="button" ng-click="sync()" ng-class="{'disabled': inSync}" class="float-right btn btn-sm btn-secondary ml-2"><span class="glyphicon glyphicon-refresh" aria-hidden="true"></span> Synchroniser</button>
 </h2>
 
 <p><input type="search" class="form-control" placeholder="Search" ng-model="query" autofocus></p>
diff --git a/admin/static/views/theme.html b/admin/static/views/theme.html
index 9538f729..5f7f4dc8 100644
--- a/admin/static/views/theme.html
+++ b/admin/static/views/theme.html
@@ -9,7 +9,7 @@
     </div>
     <div class="text-right" ng-show="theme.id">
       <button type="submit" class="btn btn-success"><span class="glyphicon glyphicon-save" aria-hidden="true"></span> Save</button>
-      <button class="btn btn-danger" ng-click="deleteTheme()"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span> Delete</button>
+      <button type="button" class="btn btn-danger" ng-click="deleteTheme()"><span class="glyphicon glyphicon-remove" aria-hidden="true"></span> Delete</button>
     </div>
     <div class="text-right" ng-show="!theme.id">
       <button type="submit" class="btn btn-primary"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Create theme</button>
@@ -19,8 +19,8 @@
   <div ng-show="theme.id" class="col-md-8" ng-controller="ExercicesListController">
     <h3>
       Exercices ({{ exercices.length }})
-      <button ng-click="show('new')" class="float-right btn btn-sm btn-primary ml-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter un exercice</button>
-      <button ng-click="syncExo()" ng-class="{'disabled': inSync}" class="float-right btn btn-sm btn-light ml-2"><span class="glyphicon glyphicon-refresh" aria-hidden="true"></span> Synchroniser</button>
+      <button type="button" ng-click="show('new')" class="float-right btn btn-sm btn-primary ml-2"><span class="glyphicon glyphicon-plus" aria-hidden="true"></span> Ajouter un exercice</button>
+      <button type="button" ng-click="syncExo()" ng-class="{'disabled': inSync}" class="float-right btn btn-sm btn-light ml-2"><span class="glyphicon glyphicon-refresh" aria-hidden="true"></span> Synchroniser</button>
     </h3>
 
     <p><input type="search" class="form-control" placeholder="Search" ng-model="query" autofocus></p>
diff --git a/frontend/static/views/team-edit.html b/frontend/static/views/team-edit.html
index 059de5f3..31f51566 100644
--- a/frontend/static/views/team-edit.html
+++ b/frontend/static/views/team-edit.html
@@ -24,7 +24,7 @@
 	  <div class="input-group">
 	    <input type="text" class="form-control" id="newName" ng-model="newName" placeholder="{{ my.name }}">
 	    <span class="input-group-btn">
-	      <button class="btn btn-info">Valider</button>
+	      <button type="submit" class="btn btn-info">Valider</button>
 	    </span>
 	  </div>
 	</div>
diff --git a/frontend/static/views/theme.html b/frontend/static/views/theme.html
index f9d1585b..bafbba4b 100644
--- a/frontend/static/views/theme.html
+++ b/frontend/static/views/theme.html
@@ -52,8 +52,8 @@
 	    </div>
 	    <div class="list-group">
 	      <a target="_self" class="list-group-item text-light" ng-repeat="hint in my.exercices[current_exercice].hints" ng-href="{{ hint.file }}">
-		<button ng-click="hsubmit(hint)" class="float-right btn btn-info" ng-if="!(hint.content || hint.file)" ng-class="{disabled: hint.submitted}"><span class="glyphicon glyphicon-lock" aria-hidden="true"></span> Débloquer</button>
-		<button ng-click="hint.hidden = false;" class="float-right btn btn-info" ng-if="!hint.file && hint.hidden"><span class="glyphicon glyphicon-lock" aria-hidden="true"></span> Afficher</button>
+		<button type="button" ng-click="hsubmit(hint)" class="float-right btn btn-info" ng-if="!(hint.content || hint.file)" ng-class="{disabled: hint.submitted}"><span class="glyphicon glyphicon-lock" aria-hidden="true"></span> Débloquer</button>
+		<button type="button" ng-click="hint.hidden = false;" class="float-right btn btn-info" ng-if="!hint.file && hint.hidden"><span class="glyphicon glyphicon-lock" aria-hidden="true"></span> Afficher</button>
 		<h1 class="float-left" style="margin: 5px 7px 5px -5px" ng-if="hint.file"><span class="glyphicon glyphicon-download" aria-hidden="true"></span></h1>
 		<h4 class="list-group-item-heading">{{ hint.title }}</h4>
 		<p class="list-group-item-text" ng-if="!hint.file && hint.content && !hint.hidden" ng-bind-html="hint.content"></p>
