Bug 877634 - Tabzilla search input is inaccessible when in (mobile) compact mode
Fix bug 874525: Redirect NSS/* and JSS/* to MDN.

Commit 98b4668f redirected the NSS and JSS directories to MDN. This
commit additionally redirects the files and directories that live below
them to MDN.
Merge branch 'bug-877634-tabzilla-compact-search' of https://github.com/kyoshino/bedrock into kyoshino-bug-877634-tabzilla-compact-search
Merge pull request #947 from openjck/bug-874525-redirects-1
Bug 877165 - Remove/redirect /firefox/connect page