CB-5988 android: Allow exec() only from file: or start-up URL's domain

Native side of change:
http://git-wip-us.apache.org/repos/asf/cordova-android/commit/aab47bd4
android: Delete Location-change JS->Native bridge mode

It was always disabled, and there's really no reason to keep it around.
Adds Unified windows platform
Adds WinJS 2.1 script injection for windows phone 8.1
Fixes jshint spacing issues