[contactsd] Fill out some missing functionality using qtpim
[contactsd] Prefer nickname to display label in presence
[contactsd] Add contacts for unknown addresses
[contactsd] Do not attempt to remove absent avatar detail
[contactsd] Pass telepathy tests with qtpim/qtcontacts-sqlite
[contactsd] Pass birthday tests
[contactsd] Create telepathy contacts on discovery

Whenever telepathy reports a contact we don't yet know about, create an
internal representation for that contact.
Merge pull request #12 from matthewvogt/add-missing

Pass contactsd unit tests with qtpim