userportal, webadmin: manual refresh stuck at loading.

- Fixed issue in user portal where pressing the refresh button
in the extended tab VM grid would show the loading image but
would never show the data unless some data actually changed.

Change-Id: I49a5a6c72fc25423cd68fd987ccd58b696609261
Signed-off-by: Alexander Wels <awels@redhat.com>