MOCCACAL-53: Adding calendars with apostrophe in the name does not work

* actually did too much escaping with the fix as doc.getDisplayTitle()
  is already html escaped - revert these
[misc] sync translations with l10n
Merge branch 'stable-2.1.x'

Conflicts:
	application-mocca-calendar-ui/src/main/resources/MoccaCalendar/MoccaCalendarEventSheet.xml
  * bugfix applied twice, resolved by using version from master only