Bug 1065511 - guard against falsey unfilteredStack. r=etienne
Bug 1065262 - [Lockscreen] No action is triggered on notification in lock screen with passcode enabled
bug 1064975 - ensure enter/leaveTaskManager is called for *all* applications even when stack is filtered. r=sfoster
Merge pull request #24324 from snowmantw/issue1065262-v2.1

Bug 1065262 - [Lockscreen] No action is triggered on notification in loc...
Bug 1062964 - RTL in Notifications toaster is broken
Bug 1061444 - Keep the iccids and restore the apn settings when necessary
 Bug 1062730 - [NFC] Home button could not work well after receiving multiple websites which are shared via NFC
1. publish activeappchanged when app is changed in app_window_manager.js
2. stop tiltiing effect if receiving activeappchanged event
Bug 1068619 - [v2.2] [v2.1] Investigate test_browser_search failure
Merge pull request #24389 from viorelaioia/bug_1068619_v2.1_

Bug 1068619 - [v2.2] [v2.1] Investigate test_browser_search failure
Bug 1071707 - Remove browser dependency from marionette tests r=Cwiiis
Merge pull request #24354 from nullaus/bug1064975

bug 1064975 - ensure enter/leaveTaskManager is called for *all* applicat...
Revert "Merge pull request #24354 from nullaus/bug1064975"

This reverts commit a4c14a9a385af9957c0958667405d186e0c87a66, reversing
changes made to 9e28b533bc4f66bb8c440baacd7d807c50fee646.
Merge pull request #24380 from anefzaoui/bug-1062964

[v2.1] Bug 1062964 - RTL in Notifications toaster is broken
bug 1064975 - Ensure enter/leaveTaskManager is called for all apps. r=sfoster
Bug 1066015 - [Camera] black screen when press power key as soon as you open a camera app
Merge pull request #24401 from nullaus/bug1064975

bug 1064975 - Ensure enter/leaveTaskManager is called for all apps. r=sf...
Bug 1056647 - [Contacts] Refactor the FB sync schedule and remove it from the app critical path
Bug 1060101 - [Settings][Facebook] Removing a Facebook account from Contacts will not finish if Facebook was set up during the FTU / FTE
Bug 1061401 - Fix multiple activity window orientation issue
Bug 1066557 - roaming is undefined error