SystemUI: add CHANGE_NETWORK_MODE permission

Required for 2G/3G quick settings toggle

Change-Id: I72392bd995d12c22388c99f34abb431cd0be8f0d
Revert "am: Allow more hidden apps on devices with lots of RAM"

 * No longer required.

This reverts commit e943b71954faa659c6e03808cd912a4e9f898b05.

Change-Id: I5e20b08277d1695a8a3c57c72f1b5ca6aec70f8c
Merge "SystemUI: add CHANGE_NETWORK_MODE permission" into cm-11.0