Added missing css class to share location button.

static/partials/chatroom.html

@@ -4,7 +4,7 @@
         <div class="btn-group">
             <button ng-if="!isgroupchat" class="btn btn-sm btn-primary" title="{{_('Start video call')}}" ng-click="doCall()"><i class="fa fa-phone fa-fw"></i></button>
             <button class="btn btn-sm btn-primary btn-fileupload" title="{{_('Upload files')}}"><i class="fa fa-upload fa-fw"></i></button>
-            <button class="btn btn-sm btn-primary" title="{{_('Share my location')}}" ng-click="shareGeolocation()"><i class="fa fa-location-arrow fa-fw"></i></button>
+            <button class="btn btn-sm btn-primary btn-locationshare" title="{{_('Share my location')}}" ng-click="shareGeolocation()"><i class="fa fa-location-arrow fa-fw"></i></button>
         </div>
         <div class="btn-group pull-right">
             <button class="btn btn-sm btn-default" title="{{_('Clear chat')}}" ng-click="doClear()"><i class="fa fa-eraser fa-fw"></i></button>