[4.4] Update custom search-links so Saved Reports are displayed

DO NOT COMMIT until Bugzilla has been upgraded to 4.4.

Saved Reports are a new feature in 4.4 but we use custom code for
the sidebar so they'd never get displayed without updating this.

Bug: 59889
Change-Id: I1b243f32aa01eb1b6b5a80b29b518fbd3aea01e4