Add Quiet hours function and QS tile, (1/3):

Thanks to CM and SlimRoms:
https://github.com/SlimRoms/frameworks_base/commit/b5d81d2f0079ed79e50c04615707c8b1619b9d8d
https://github.com/SlimRoms/frameworks_base/commit/668f745d44282de9b8922f8ac4fc3053582b4b4d
https://github.com/SlimRoms/frameworks_base/commit/e4bbeb091f0d1dbc383e27d573bdb2d2e8309cef
https://github.com/SlimRoms/frameworks_base/commit/2ac61a5b6618543f86652527c13469895e079cda
https://github.com/SlimRoms/frameworks_base/commit/449e9ea0233aff104e2555eebc96524f228ff8bb