Don't show quick response messages for private numbers.

The respond-to-sms code was seeing "tel:" as the uri address, so I
updated the code so that restricted, unknown, and the above example all
get translated to a null address. This forces everything to work as
intended.

Bug: 18092431
Change-Id: Ibad1b510afd523268a9a37e2f48d0d62a7a7ebe4

Conflicts:
	src/com/android/server/telecom/RespondViaSmsManager.java
3 files changed