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
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[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex