RHS (video pane) collapse/expand feature

public/js/mc.js

@@ -12,6 +12,10 @@ $(document).ready(function() {
             icon.removeClass().addClass('fa fa-arrow-right');
         }
     });
+    var body = $(window.top.document.body), icon = $(this).find('i');
+    if(body.is('.stag_rhs_collapsed')) {
+        icon.removeClass().addClass('fa fa-arrow-left');
+    }
 });
 function openInRHS(_url) {
     window.top.showRHS();