- planner default group was not always used and some other cleanups in the state handling
- added single owner to the app-header, to make it more obvious which calendar is viewed
- added error-message if a calendar is requested, from which the user has no read-grant (before you got an empty calendar)
- groups can now be selected as participants again
- groups need to have calendar run-rights, to be selectable in the calendar (as it was in 1.0)
- groups will NOT be enumerated as users anymore
--> new or removed members are taken into account as participants
- error messages: if no participant selected or startdate behind enddate (no more automatic swapping)
- pushing the version to 1.2
- no more tooltips for the user-icon
- planner: no "dayview" tooltips on holidays or birthdays
- disabled cal prefs for: default filter (all||privat) and showing of participant status or not
- planner: monthscales are now correctly shown, only where necessary
- planner icon no longer uses the number of days from the current view
