Settings: Default the old CM Power widget to OFF

THe Power widget functionality will be replaced by the new QuickSettings
functionality of Android 4.2.  Turn the old CM widget off by default.

Change-Id: I9144130898aff1fb9f882aaf68a3b0873742f3d6
PowerWidgetUtil: Re-enable LTE button.

- Also use Settings.Global.getInt() for PREFERRED_NETWORK_MODE.

Change-Id: I677de6353bf451fe4390ff74f9703b5df3beb39d
Use DefaultContainerService for all file operations

For devices with non-emulated storage, the system uid is not allowed
to access the storage (to prevent system_server from being killed
on UMS mount). Old code remain that make file access directly, change
those to use DefaultContainerService

Depends on http://review.cyanogenmod.org/28179

Change-Id: Ie6bdaf27249daeabdc7f0ef1d73d484764ee35f0

Conflicts:
	src/com/android/settings/deviceinfo/MiscFilesHandler.java
Settings : Switch state fix

Since the switch views are shared, we need to recreate them
in order to prevent from being reused as they don't share state.

Change-Id: I4d7038f37883e1791c8c2b0009f0adb85ebb2b88
Add "Option to control cursor in text fields using volume keys (2/2)"

Change-Id: I8dad625fd0fa7c56111814ef6b950bd04f2460ae

Conflicts:
	res/values/arrays.xml