Long-press entry in "View Contact" activity to share plain-text contact info.

Works with phone numbers, email addresses, and street addresses.
Basically a quick way to share contact info with someone, rather than sending the entire contact's vCard (which isn't supported by Messaging app, in particular).

Change-Id: Ie26f9f16a0ca12477b781f9cb3b8b88d8a4af126