Merge pull request #20275 from lanker-sony/1022733-splash_icon

Bug 1022733 - Entry points lost their splash screen/overlay icons
Merge pull request #20243 from gabrielesvelto/bug-1022554-do-not-launch-before-populating-the-message

Bug 1022450 - Don't show the "WAP Push Message" string in the header when opening a message
r=julienw
Merge pull request #20544 from KevinGrandon/bug_1025609_calendar_uuid_path_fix

Bug 1025609 - Unable to add a Gmail calendar