Copy certain settings to the managed profile

All reads of those specific settings will go to the primary user.
Inserts to primary also go to managed profiles in order to notify
any observers.

This enables Location settings to be shared by both profiles.
Also some other settings related to IME and Accessibility since
those services are shared across the profiles.

Bug: 16457210
Change-Id: Ib8fd697b5c78027fcbaf245d82dda5e6d6aab4f0