[LatinIME] Support MNC permissions.

This build has been compiled against API 23

This build is approved to go out with the M OTA, but may NOT be released
to the public until the Play Store has enabled API level 23 apps

Version: 4.1.2300x.build_id

1. Replaces the personalization is on information with the suggest
   contacts.
2. Enables "Use Contacts" only if the app has permission to read
   contacts.
3. Disables the contacts dictionary in the Facilitator.
4. Do not register/read the contacts in the contact observer.

Bug: 22236416
Change-Id: I9674e13d0d0f4a2014c5024fde0178de684c07e7