Bug 1046736 - [MobileID] Set default country code in phone number manual selection. r=alive
Bug 1043293 - [Verticalhome] use "touchend" instead of "click" to launch applications r=kgrandon

* attach the scroll event on the main window
* remove stopImmediatePropagation from some locations so that the contextmenu
  event can be received by the grid
* if the event is defaultPrevented, we don't do the default action, that is
  neither drag&drop (edit mode) or launch an app
Merge pull request #22357 from ferjm/bug1046736.mobileidcc

Bug 1046736 - [MobileID] Set default country code in phone number manual...
Bug 944249 - [Messages] move the segment information request and size check and message type handling to compose.js r=schung

* adds a MessageManager.getSegmentInfo function
* ThreadUI sends a recipientschange event when recipients change
* Compose sends a new event "segmentinfo" when that info changes
* various other refactoring changes in Compose