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...
slovenian translation added