[2/3] Settings: QuickSettings (SlimBean)

Base: https://gerrit.omnirom.org/#/c/3918/
Telephony: https://gerrit.omnirom.org/#/c/3932/

Builds & Works. Needs refining & code cleanup.

TODO: Move quicksettings to a seperate header in main
      activity.

PS6

Change-Id: Ibf1f9ea9333b872a46fb67112ab745e70f76eb1b