CM11 Themes: Allow defining a custom default theme [1/3]

Change-Id: I6b794d6c9c27b2d6436bdf4fec51c84a7859c134

Conflicts:

	core/java/android/content/pm/ThemeUtils.java
	core/java/android/provider/Settings.java
	packages/SettingsProvider/res/values/defaults.xml
	packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java
	services/java/com/android/server/AppsLaunchFailureReceiver.java
	services/java/com/android/server/ThemeService.java

rm duplicate 'kill_app_longpress_back' in settings.java

Change-Id: I80e5633d05f11c63cbb83a7927b2d40a1487b96d