Bug 1058286 - Add in-tree manifests needed for tests. DONTBUILD a=NPOTB
Bug 1082051 - Enable enhanced tiles for desired locales on 33. r=ttaubert, a=sledru

Undo testing check requirement added by bug 1073823.
Bug 1081157 - "What is this page" link appears on "blank" version of about:newtab. r=ttaubert, a=sledru

Hide the link with css display: none when page is disabled.
Bug 1083071 - Add some old intel drivers to the blocklist. r=Bas a=sledru
Merge releases/mozilla-release and alder