Fix license.
[jan] Fix printing of structured fatal error details.
Move resource/folder listing to base class.
Add classes for interfacing to events/calendar store.
Fix display of event tooltips in year view (Bug #13057).

Still needs some CSS tweaking for the current day highlighting.
Make fromHash() more complete.
Add new shares to the ALL_CALENDARS list too.
[jan] Add script to import events from Open-Xchange.