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)

Change-Id: I8e465170dfef80610f0f95bc8319564ad0aef5d2

Conflicts:
	res/values/cm_strings.xml
	res/xml/lockscreen_interface_settings.xml