Fix bug 1055111 - Make calCachedCalendar async safe. r=philipp
Fix bug 1054679 - Make the CalDAV provider async safe. r=philipp
Fix bug 1049341 - Cannot edit meeting attendee list once invite created. r=philipp
Fix bug 1047227 - Lightning 3.3 no event cancellation button. r=philipp
Fix bug 1045417 - Event attendee with a comma in display name gets splitted in two attendees. r=philipp
Fix bug 1041299 - Sending invitations with configured cc/bcc is broken. r=philipp
Fix bug 1022120 - Week-view: labels in the day headers don't change from long to short format (regression). r=markus,a=Standard8