Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1326633
Description of problem:
When creating a bookmark, after hitting the 'Submit' button no notification messages appear, making user not sure whether the creation was actually successful. It's especially confusing when validation happened (e.g. user forgot to input bookmark name) and bookmark wasn't actually created - modal form just closes and that's it, and user has to manually navigate to bookmarks list and check whether the bookmark was created.

Version-Release number of selected component (if applicable):
Satellite 6.2 Beta Snap 7.1

How reproducible:
Always

Steps to Reproduce:
1. Navigate to any page with a search box (e.g., Hosts -> Operating Systems)
2. Successfully create any search bookmark, check notification message.
3. Fail to create any search bookmark (e.g., leave 'Name' field empty), check notification message.

Actual results:
Notifications for both successful and unsuccessful bookmark creation are missing.

Expected results:
Notifications should appear for both successful and unsuccessful bookmark creation.

Additional info:
There're 2 bookmark creation forms. Examples are form on Hosts -> Operating Systems and Content -> Products. Need to ensure notifications were added to both kinds of pages.