* Change Bluetooth pairing dialogs to match ICS wireframes.
* Default to numeric soft keyboard for PIN entry, and add checkbox
to allow user to switch to alphanumeric keyboard if necessary.
* Move all Bluetooth advanced settings into action bar menu.
* Toggle visibility by touching "My device" entry in devices list.
Change-Id: Ic2377eb4364f41d215181cb1e3933997c9db9106
Bluetooth PIN is changed to password style to
comform with how passwords are normally shown
in the UI.
Change-Id: I293e94cf3766f9b5b82b9bb89e5aed4bd494ef71