minor hotfix bootstrap

sails/src/assets/scripts/modules/student/views/pictoconfig.html

@@ -18,7 +18,7 @@
             <div class="row">
             <div class="row">
               <div class="col-xs-6">
               <div class="col-xs-6">
                 <div class="input-group" id="add_label" >
                 <div class="input-group" id="add_label" >
-                  <span class="input-group-addon glyphicon glyphicon-comment" aria-hidden="true"></span>
+                  <span class="input-group-addon"><span class="glyphicon glyphicon-comment" aria-hidden="true"></span></span>
                   <input type="text" class="form-control" ng-model="studentPicto.attributes.expression" />
                   <input type="text" class="form-control" ng-model="studentPicto.attributes.expression" />
                 </div>
                 </div>
               </div>
               </div>

sails/src/assets/scripts/modules/student/views/pictoexp.html

@@ -9,7 +9,7 @@
 
 
       <form ng-submit="save()">
       <form ng-submit="save()">
         <div id="add_label" class="input-group">
         <div id="add_label" class="input-group">
-          <span class="input-group-addon glyphicon glyphicon-comment" aria-hidden="true"></span>
+          <span class="input-group-addon"><span class="glyphicon glyphicon-comment" aria-hidden="true"></span></span>
           <input type="text" class="form-control" ng-model="expression" autofocus/>
           <input type="text" class="form-control" ng-model="expression" autofocus/>
            <span class="input-group-btn">
            <span class="input-group-btn">
             <button class="btn btn-success" type="submit" translate>save</button>
             <button class="btn btn-success" type="submit" translate>save</button>

sails/src/assets/scripts/modules/student/views/tags.html

@@ -11,7 +11,7 @@
         <li class="list-group-item clearfix">
         <li class="list-group-item clearfix">
           <form ng-submit="add()">
           <form ng-submit="add()">
             <div id="add_label" class="input-group">
             <div id="add_label" class="input-group">
-              <span class="input-group-addon glyphicon glyphicon-tag" aria-hidden="true"></span>
+              <span class="input-group-addon"><span class="glyphicon glyphicon-tag" aria-hidden="true"></span></span>
               <input type="text" class="form-control" ng-model="tagToAdd" />
               <input type="text" class="form-control" ng-model="tagToAdd" />
                <span class="input-group-btn">
                <span class="input-group-btn">
                 <button class="btn btn-success" type="submit" translate>add</button>
                 <button class="btn btn-success" type="submit" translate>add</button>