nicer error when renaming to existing name

nicer error when renaming to existing name+status

nicer error when renaming to existing name+priority

nicer error when renaming to existing name+tag

nicer error when renaming to existing name+commit

nicer error when renaming to existing name+example

Rename this to "test card foo" ...

and you get:

notice = getNextElement(getSlotFromContext('main_1_8_1'),'notice'); notice.update('

NAME: must be unique-- A card named 'test card foo' already exists

I didn't get that error. It's not awesome, but... we'll get this in the internationalization sweep. closing.