Code cleanup
Update version for tag
Update version for dev towards next 0.3 release
Institute more reliable fix for #843

dojo/dnd *replaces* the dojoDndContainer class when its state changes, but
the dojoDndSource class remains constant.
Update ColumnReorder selector for table-cell override again

Turns out dojo/dnd changes both dojoDndSource and dojoDndContainer classes,
at different times...
Merge remote-tracking branch 'original/master' into dev-0.4

Conflicts:
	CHANGES.md
	extensions/Pagination.js
	package.json