fix build break

Change-Id: I471514f9d8d54abc68d39c9666968786eaef9f8c
add empty folder MiuiSystemUI

Change-Id: I72d6878858086b4f07b0e7c2f6bf676d69d1b68e
disable rec
fix compile errors caused by new public id
add a method areNotificationsEnabled

Change-Id: I457c48309198c13033b64e0bc0800e1ad7a3105d
fix compile errors
change default boot