webadmin: remove sortby/page from searchstring

- Removed sortby and page as options from the drop
  down in the search box.

Change-Id: I2b905d91e4b0a147df9c0e75c956e819ba42d0e6
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1129298
Signed-off-by: Alexander Wels <awels@redhat.com>