New option to disallow team creation: join only

admin/main.go

@@ -178,6 +178,7 @@ func main() {
 			WChoiceCurCoefficient:  1,
 			AllowRegistration:      false,
 			CanJoinTeam:            false,
+			DenyTeamCreation:       false,
 			DenyNameChange:         false,
 			AcceptNewIssue:         true,
 			EnableResolutionRoute:  false,

admin/static/views/settings.html

@@ -129,6 +129,13 @@
       </label>
     </div>
 
+    <div class="form-check">
+      <label class="custom-control custom-checkbox">
+	<input class="custom-control-input" type="checkbox" ng-model="config.denyTeamCreation" ng-disabled="!config.allowRegistration && !config.canJoinTeam">
+	<span class="custom-control-label">Interdire la création de nouvelles équipes</span>
+      </label>
+    </div>
+
     <div class="form-check">
       <label class="custom-control custom-checkbox">
 	<input class="custom-control-input" type="checkbox" ng-model="config.denyNameChange">