Fix input field focus bug

Remove an event handler which added from Bootsrap to the document, when a modal dialog shown.

circle/dashboard/static/dashboard/activity.js

@@ -41,6 +41,10 @@ $(function() {
         $('#confirmation-modal').on('hidden.bs.modal', function() {
           $('#confirmation-modal').remove();
         });
+        $('#confirmation-modal').on('shown.bs.modal', function() {
+          $(document).off('focusin.modal');
+        });
+
         $('#vm-migrate-node-list li input:checked').closest('li').addClass('panel-primary');
       }
     });
@@ -237,4 +241,3 @@ String.prototype.hashCode = function() {
   }
   return hash;
 };
-