Bug 995626 - Fade in tab titles and close buttons when opening a tab. r=jaws

--HG--
extra : rebase_source : 1f0579ad698d3d54e5896ec2fbd60b9b56251234
Bug 947570 - Disable browser_597071.js until rewritten for Marionette r=smacleod
Bug 966843 - Fix intermittent browser_615394-SSWindowState_events.js hangs r=smacleod
bug 959573 - Land UnifiedAutocomplete (disabled by default). rs=ttaubert
Bug 996186 - Customize mode briefly makes titlebar transparent during transition. r=Gijs.
Bug 995164 - registerArea should work correctly with customize mode, r=mconley
Bug 987067 - use different selector on Windows/Linux than on OS X for background tab clipping for pointer events, r=dao,MattN
Bug 639524: Use the application shipped blocklist when it is newer then the profile version. r=Unfocused
Bug 993272 - Uplift Add-on SDK to Firefox
merge fx-team to m-c