Bug 1000323 - Reauthenticate the user when disabling Find My Device.
Bug 1038326 - Fix layout issues with searchWindow and children. r=alive
Bug 1039931 - [gaia][system] Replace __proto__ with Object.create

* Remove usages of __proto__ in the system app.
Bug 982029 - [MMS/SMS] Display email in SMS/MMS Threads r=julien
Bug 1040215 - [Messages] Move initSentAudio out of enableSend r=azasypkin
Bug 1009568 - [Messages] Possibly remove the code with forceClean in ThreadUI.cleanFields r=azasypkin
implement MessageManager.getSegmentInfo
ThreadUI sends a recipientschange event when recipients change
changes in compose with green tests for compose_test.js

factorize hasAttachment() and use it when deciding if we should update the text value

some simplifications and send an event when segmentinfo changes

put the send button update in its own function
move enableSend functionality to compose.js
final removal of code in ThreadUI
WIP test changes