Summary: Depends on D20010. Ref T920. Allow users to designate which contact number is "primary": the number we'll actually send stuff to. Since this interacts in weird ways with "disable", just do a "when any number is touched, put all of the user's rows into the right state" sort of thing. Test Plan: - Added numbers, made numbers primary, disabled a primary number, un-disabled a number with no primaries. Got sensible behavior in all cases. Reviewers: amckinley Reviewed By: amckinley Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam Maniphest Tasks: T920 Differential Revision: https://secure.phabricator.com/D20011