dashboard: Fix the modal input focus bug

The transfer ownership input in the modal now works properly. Instead of local solution now use a global method what overrides bootsrap enforce focus.

circle/dashboard/static/dashboard/activity.js

@@ -41,9 +41,6 @@ $(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');
       }

circle/dashboard/static/dashboard/dashboard.js

@@ -40,10 +40,6 @@ $(function () {
         modal.on('hidden.bs.modal', function() {
           modal.remove();
         });
-
-        modal.on('shown.bs.modal', function() {
-           $(document).off('focusin.modal');
-        });
       },
       error: function(xhr, textStatus, error) {
         if(xhr.status === 403) {
@@ -562,3 +558,5 @@ $(function() {
     inputs.prop("checked", !inputs.prop("checked"));
   });
 });
+
+$.fn.modal.Constructor.prototype.enforceFocus = function() {};