userportal,webadmin: fix loading animation.

- Fixed loading animation not showing when doing the
  following:
  - Select item in the system tree
  - Switch main tabs
  - Switch sub tabs.
- Fixed loading animation being stuck when you first
  log in.

Change-Id: I834253f33ae965eacd058f77f720035f45ec6f02
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1052149
Signed-off-by: Alexander Wels <awels@redhat.com>