Merge pull request #20684 from ferjm/bug1023860.cancelmobileid

Bug 1023860 - Canceling the UI flow should clean up pending content requ...
Merge pull request #20408 from alivedise/bugzilla/1021658/turn-child-window-off

Bug 1021658 - Pref off in app sheet and disable popup on transitioning, r=etienne
Merge pull request #20547 from alivedise/bugzilla/1023812_master/find-bottom-most-window-to-open-or-close

Bug 1023812 - Find bottom most window to do open/close operation when ac...r=timdream
Merge pull request #20641 from millermedeiros/1023777-account-warning

Bug 1023777 - [B2G][Calendar] Account warning icon is bigger than it should r=gaye