Settings: Fix switch state being out of sync.

    - Since QS Tile can also set state of Heads up now,
    we have to set a content observer for the action bar
    switch.

Change-Id: I1c63fd2627a0f823eb6982456e1ed79ab84d1957
Add some system packages to package list adapter.

As we're using the adapter for notification control stuff, we need to
include those packages, too, as they're throwing notifications as well.

Also optimize code a little.

Change-Id: I8829041a535923e3d93d9566e27eb99c48f25abd
Integrate quite hours active period strings for JA translation

Change-Id: If9c195ecbf9d00f01108185bba1a75be7c115b39
Settings: Modify volume override summary for JA translation

Change-Id: Ia9a14def58c7c195ba5c5cf55983b8d33ec8b5a7
Settings: Move home answer & power end call options

Move 'Home answers call' & 'Power ends call' options to button settings

Change-Id: I2f365a3d278b0845b7c5ffcfe70c54160a00c24e