Bug 1049741 - [Messages] navigation.js sets the data-position after a first reflow and triggers a 50ms reflow at launch time r=azasypkin
Merge pull request #22585 from julienw/1049741-set-position-at-startup

Bug 1049741 - [Messages] navigation.js sets the data-position after a fi...
Bug 1048927 - Enable 'add to home' for all web content. r=vingtetun

This enables the 'add to home' option for all web content and not just
e.me results.
Bug 1048927 - Use button.disabled in app chrome. r=vingtetun

Stop using data-disabled unnecessarily for button elements.
Bug 1048937 - Implement  'share' option in system browser. r=vingtetun
Bug 1050319 - Add 'New Window' to browser system menu. r=vingtetun