userportal,webadmin: snapshot subtab action bar

- When using the splitter to resize the snapshot section of
  the snapshot sub tab the action bar would not automatically
  create the dropdown menu when not enough room existed. This
  patch fixes that problem in both user portal and web admin

Change-Id: I8f587170fffba3bc4d27a0144cd02f4ed2a2aa52
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1071387
Signed-off-by: Alexander Wels <awels@redhat.com>