phone/ related bug fixes

- Fixed typo with an isKindOfClass comparison
- Fixed a bug in PhoneNumberDirectoryFilterManager where if an update failed it
  didnt save the retry date
Merge pull request #197 from gavia/bugfix

Merging some AddressBook related changes
Merge remote-tracking branch 'upstream/master'

Conflicts:
	Signal/src/phone/signaling/CallConnectUtil_Responder.m
	Signal/src/phone/signaling/number directory/PhoneNumberDirectoryFilterManager.m