** Added calendar event data transfer object class
** CreateEvent returns proper object
Merge origin/FTR-40_CALEVT into FTR-40_CALEVT

Conflicts:
	muikku-google-calendar/src/main/java/fi/muikku/plugins/googlecalendar/GoogleCalendarServiceProvider.java
Added missing methods to GoogleCalendarServiceProvider
Merge origin/FTR-40_CALEVT into FTR-40_CALEVT

Conflicts:
	muikku-core/src/main/java/fi/muikku/calendar/CalendarServiceProvider.java

** Added method stubs for new methods
Merge origin/FTR-40_CALEVT into FTR-40_CALEVT