Merge pull request #17499 from dominickuo/bug-982540

Bug 982540 - [Music] Recover the status to PLAYING after the player is resumed from the mozinterrupend event, r=jimporter
Bug 988148 - Hide the mobile connection state if it is emergency calls only and not primary sim
Merge pull request #17423 from timdream/keyboard-mempressure-race-master

Bug 984238 - Don't kill the keyboard when when it's being launched +shepherd
Merge pull request #17319 from crdlc/bug-984399

Bug 984399 - Contacts list is not properly updated when importing a new ...
Merge pull request #17721 from russnicoletti/bug987224

Bug 987224 - [B2G][Video]Unable to watch videos in video app after deleting two videos. r=johu
Merge pull request #17682 from alivedise/bugzilla/988261/hide-utility-tray-on-launchapp

Bug 988261 - Hide utility tray on launchapp event, r=timdream