Minor fixes

app/css/app.css

@@ -1467,7 +1467,7 @@ div.im_message_video_thumb {
   background-position: -2px -542px;
 }
 
-.im_history_selectable a[ng-click] {
+.im_history_selectable a {
   pointer-events: none;
 }
 

app/js/directives.js

@@ -2161,6 +2161,7 @@ angular.module('myApp.directives', ['myApp.filters'])
             initEl.removeClass(prevClass);
           }
           initEl.addClass(newClass);
+          prevClass = newClass;
         }
 
         updatePeerPhoto();