webadmin: change few queries to be not refreshable

The automatic logout did not work when the snapshot sub-tab was shown.
It did not work because queries which were executed in this state were
invoked as refreshable, thus preventing the session from being
terminated automatically. So the solution is to change those queries to
be not refreshable.

Change-Id: I6c367c274bfc518f920344a57d7efd3fefd75d30
Bug-Url: https://bugzilla.redhat.com/1058629
Signed-off-by: Arik Hadas <ahadas@redhat.com>