Merge branch 'fullcalendar'

3rdparty/fullcalendar/GPL-LICENSE.txt

3rdparty/fullcalendar/MIT-LICENSE.txt

3rdparty/fullcalendar/changelog.txt

3rdparty/fullcalendar/css/fullcalendar.css

3rdparty/fullcalendar/css/fullcalendar.print.css

3rdparty/fullcalendar/js/fullcalendar.js

3rdparty/fullcalendar/js/fullcalendar.min.js

3rdparty/fullcalendar/js/gcal.js

3rdparty/when/MIT-LICENSE.txt

3rdparty/when/When.php

apps/calendar/ajax/activation.php

apps/calendar/ajax/changeview.php

apps/calendar/ajax/createcalendar.php

apps/calendar/ajax/editevent.php

apps/calendar/ajax/editeventform.php

apps/calendar/ajax/events.php

apps/calendar/ajax/getcal.php

apps/calendar/ajax/guesstimezone.php

apps/calendar/ajax/moveevent.php

apps/calendar/ajax/neweventform.php