Andreas Traczyk authored Oct 19, 2017 and Adrien Béraud committed Aug 07, 2018

- Fixes regression in parseFromString causing poor
  deserialization of the vcard's image.
- Fixes crash on empty trustrequest vcard.
- Fixes typo in vcard image serialization attribute string.
- Prevents connectivity changes from triggering ring API calls
  before the daemon has started.

Change-Id: I72fb9aee5ebedab9b878c04f9617cb7bd7728023