Default fields in contact editor

- Remove website and notes as default fields that show when
you create a new contact

- Don't allow "Add another field" button to add fields for
sections that are already visible (i.e. if website section is
visible, then "website" won't show up in the popup menu)

- TODO: Handle the case where there are no more fields to
add, need mocks from UX

Change-Id: I3b0929ebf69c93b60220c75c0b00b72cf5b2aa83
2 files changed