Lockscreen Notifications [2/2]

- Enable/disable lockscreen notifs
- Pocket mode
- Show always
- Hide Low Priority
- Hide Non Clearable
- Allow dismissing non clearable notifications
- Eenable/disable expanded notifications
- Force expanded view
- Wake on notification
- Notification count displayed at once
- Privacy Mode
- Offset to the top of the screen
- Blacklist apps (thanks @Der-Schubi and ChameleonOS)
- Custom notifications background color

Change-Id: I7e1ec5c6258ce723495060000d58601b0e4c88c0