• Fix migration 7: The migration replaced placeholders in the addressbook URLs with the data of the user during whose
  login the migration was executed. This would result in broken URLs in such cases.
• Adjust interfaces for roundcube 1.7 changes (Fixes: #467, #468, and #473 (thanks @nick-oconnor))
• VCards imported via Roundcube import function are stored to server as is (except for compatibility fixes, e.g. adding
  UID) (Fixes #470)