Bug 972144 - don't show error notification for LOGIN_FAILED_NOT_READY. r=ttaubert
Bug 965472 - about:accounts should open a new tab to display legacy sync info. r=ttaubert
Bug 968435 - prevent sync panels from appearing on top of other applications. r=ttaubert
Bug 971825 - [Australis] Undo link after restoring defaults should be a button. r=dao ui-r=shorlander
Bug 969376 - correctly size Australis' menu button, make it hug right border on Windows and Linux, r=jaws

--HG--
rename : browser/base/content/test/general/browser_backButtonFitts.js => browser/base/content/test/general/browser_menuButtonFitts.js
Bug 969376 - fix all the tests for Australis panel to not go orange because of promises and weirdness, r=jaws
Bug 968828 - [Australis] Sync Icon for the horizontal menu. r=Gijs
Bug 971413 - Send Reader:Removed as response to Reader:Remove. r=lucasr
Merge m-c to fx-team
Bug 971873 - ProxySelector references String.isEmpty(), which is API level 9 r=bnicholson
Bug 958900 - Backoff handling and periodic syncing for FxAccountSyncAdapter. r=nalexander
Bug 972613 - In-memory sync rate limiting. r=trivial
Bug 949213 - On-boarding screen part 2 r=mbrubeck
Merge fx-team to m-c.