disallow changing type of roles in use

Ticket

+status

+priority

+tag

+commit

+issues

...so that roles that are in use don't disappear accidentally.

+example

http://test.dwagn.org/card/changes/Those_people

remove from the role card?

yup

--John Abbe.....Tue Feb 08 04:58:27 -0800 2011

+discussed in support tickets