[2/2] Settings: LockScreen Notifications by AOSPAL

THANKS to AOSPAL -> David L.-W <david.leppla.weber@gmail.com>

Port from : http://review.carbon-rom.com/#/c/1398/

- 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

Lockscreen Notifications: wake on notification

Lockscreen Notifications: make notification count user configurable

Lockscreen Notifications: disable notification count when notfifs are disabled

Lockscreen Notifications: check for proximity sensor

PS3: New Options (privacy & position)

Lockscreen Notifications: make offset top user configurable & add privacy mode [2/2]

PS4: fix derp, whitespace
PS5: code style changes
PS6: Off by default

Change-Id: I6a7ce3370c515aba7e38c83e32c5f28cf0dd2898

Conflicts:
	res/values/dimens.xml
	res/values/strings.xml
	res/xml/system_ui_settings.xml