Issue #2467863 by Dom., JesseSturgis, mgifford, LewisNyman, Cliff, benjifisher, heatherwoz, crasx: Login form's aria-describeby points to an element that doesn't exist

Revert "Issue #2486453 by LewisNyman, sqndr, heatherwoz, hylid, yoroy, Bojhan: Set maximum width on Seven"

This reverts commit a70a74fc.

Issue #2486441 by jibla, richgilbert, entendu, emma.maria, amyvs, mradcliffe, heatherwoz, mu5a5hi, lnicks, hzakaryan: Clean up the "Search results" component in Bartik