fix fc-ltr className not being cleaned up when calendar is destroyed
make eventDrop/eventResize return a delta
tests for eventDrop/eventResize
manual test for proving issue 2048 is fixed
improve event dnd/resize tests by type-checking for all arguments
make arguments and this more consistent in event dnd/resize handlers
new plain manual test template
Merge branch 'master' of https://github.com/ynjia/fullcalendar