Correctly remember MAP access selection.

Previously, the MAP access notification used to pop up on every BT
connection. 'Don't ask this again' didn't work. Fix that by correctly
remembering not only the PBAP access selection, but also the MAP access
selection.

Change-Id: I8fb9bedc02f696c9247861eb57ad64c4a8f5f6fa
Settings : Fix accessibility shortcut

Shortcuts like accessibility, have preferences with titleText rather than
titleRes as their title. Settings only had a override for titleText, which caused
preference screens inside accessibility to not work. This commit addresses that.

Reproducable via :

1. Create a settings accessibility shortcut.
2. Launch shortcut and try to open an of the services

Expected behaviour : Appropriate ToggleAccessibilityServicePreferenceFragment should open
Observed behaviour : Same Settings instead gets relaunched instead

Change-Id: I89b7539672cd7278d51f9e88bac1948669940e59
Use a hashed MAC address instead of IMEI for stats collection.

PS2: always use hashed Wifi MAC address to avoid zombies when wiping

Change-Id: I7379c5b380273e35b5aab582f5268d6946e0a255