settings: add VideosLink parameter

admin/static/views/settings.html

@@ -20,6 +20,13 @@
     </div>
   </div>
 
+  <div class="form-group row">
+    <label for="challengeVideo" class="col-sm-2 col-form-label col-form-label-sm">Lien vidéos de résolution</label>
+    <div class="col-sm-10">
+      <input type="text" class="form-control form-control-sm" id="challengeVideo" ng-model="config.videoslink">
+    </div>
+  </div>
+
   <div class="form-group row">
     <label for="startTime" class="col-sm-2 col-form-label col-form-label-sm">Début du challenge</label>
     <div class="col-sm-10">

frontend/static/index.html

@@ -41,7 +41,7 @@
 	    <a class="btn btn-light" href="/rank">
 	      <span class="glyphicon glyphicon-list"></span> Classement
 	    </a>
-	    <a class="btn btn-light disabled" href="https://www.youtube.com/playlist?list=PLSJ8QLhKMtQv7jRhdAn9wXSMYTsvqfieX">
+	    <a class="btn btn-light" ng-class="{'disabled': settings.videoslink == ''}" href="{{ settings.videoslink }}">
 	      <span class="glyphicon glyphicon-blackboard"></span> Vidéos
 	    </a>
 	</div>

settings/settings.go

@@ -24,6 +24,8 @@ type FICSettings struct {
 	Title			string    `json:"title"`
 	// Authors is the group name of people making the challenge.
 	Authors			string    `json:"authors"`
+	// VideoLink is the link to explaination videos when the challenge is over.
+	VideosLink		string    `json:"videoslink"`
 
 	// Start is the departure time (expected or effective).
 	Start			time.Time `json:"start"`