ModLowBatteryWarning: fix null pointer exception in setFlashing hook
ModDisplay: module for display tweaks
- set minimum brightness applicable to manual brightness setting
- set autobrightness levels
- implemented custom Autobrightness Dialog Preference with special
strategy to obtain default values from the system. When preference
is open for the first time there is no user config stored yet.
A broadcast will be sent with intent to be caught by ModDisplay running
in system context which will read system autobrightness config and
send results back to GravityBox app running in user context 
using ResultReceiver - to set initial system specific autobrightness
levels.
ModLockscreen: option to enable lockscreen rotation
ModLockscreen: option to enable menu key on lockscreen
FixMmsWakelock: option to fix wakelock in Messaging that makes screen 
turn on every time new message arrives
ModCenterClock: option to set position of StatusBar clock
Added Portuguese (PT) translation
Merge pull request #23 from bgcngm/master

Added Portuguese (PT) translation
ModAudio: option to add more volume steps for music stream
ModCenterClock: apply zero padding when centered and default padding
when at original position
ModAudio: option for safe headset media volume feature
ModLowBatteryWarning: option to disable LED while charging