This is phase 1, which simply replaces the phone UX with a fragment-based
equivalent. A subsequent CL will convert it to a large-format multi-pane
version.
Also fix a latent bug in the signatures of the Incoming & Outgoing
settings, both in the reflection code and in the proguard flags.
Change-Id: I86e857af8b9573c0d6070bb21053ce65bb7fe8a0
