When building a list of individually shared events, ignore events that also belong to calendars that are shared with the user (to prevent duplication of events on calendar view).
Individually shared events can now be hidden by hiding the new 'Shared events' calendar.
If a user owns a calendar and has the same calendar shared with them, the calendar is no longer duplicated when the list of their calendars is retrieved.
show enabled calendars before disabled ones
properly urlencode all caldav links

Conflicts:
	templates/settings.php
don't allow moving events when event dialog is open
fix hickup from previous commit
Set CalDAV birthdays ctag. Fix #309
Merge branch 'master' of github.com:owncloud/calendar
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex