Bug: 3249998
Remove an extra level of menu by moving the Configure Wi-Fi hotspot preference to the Tethering settings page.
Change-Id: I20b67ae1ddd7e9967c99ff6a8039799be792382f
Remove obsolete Bluetooth tethering settings screen. BT tethering can
be turned on and off, but the connection must be initiated by the
remote device. For reverse tethering, there will be a checkbox for
that profile in the regular Bluetooth device settings screen.
Bug: 3283928
Change-Id: Ic25139f8862b305feb0381e61c24b7783fad2366
Add UserLeaveHintListener.java, so that the settings won't use
its implementation around Activity#onUserLeaveHint().
Also fragmentize bluetooth tethering screen.
Change-Id: Id06ae3161fbdb5854ddb7a257f464fb16ea9b089