Telephony: Improve latest CAF strings

Change-Id: I193bc8f56eeced113cce6c73edf24be76d42fa94
Chinese Location Lookup [2/2] Telephony: Detect external plugin.

Change-Id: I9ee3f925af09a5689ad7b72a2f1c2e1925fa3433
[2/3] Telephony: allow disabling non intrusive incall ui

Change-Id: I54c07211dc121117543ccb8a4799efa491e5a469