Bug 32633: (QA follow-up) Add handling for authorities merge
When you first click 'actions -> merge' from a result in the authories
search page you will see a new 'Merging with authority: ' text appear at
the top of the search results.
Prior to this patch, the text appears outside of the white page-section
and is almost un-noticable.
After this patch, we add a page-section with bg-info (blue backround)
around the merge message which makes it stand up more clearly.
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>