Version 0.9.1: * debug info dialog: various bug fixes and improvements * external logging: various bug fixes and improvements * contacts sync.: handle invalid photo URLs without host name * calendar/tasks sync.: only overwrite collection name and color if data is actually provided by server * events: always set HAS_ATTENDEE_DATA to 1, so that "attend: yes/no/maybe" is only shown for events with attendees * basic support for non-persistent cookies (e.g. used by Horde for session tracking) * other small improvements