webadmin: fixed search bar alignment with buttons

The search bar was off alignment from the buttons next to it by 1px.
Fixed.

Change-Id: I216d37da08ad69f28c5692b97a5f8ef6faff0e0c
Bug-Url: https://bugzilla.redhat.com/1158503
Signed-off-by: Greg Sheremeta <gshereme@redhat.com>