remove signup links when you can't signup
Ticket
remove signup links when you can't signup+status
remove signup links when you can't signup+priority
remove signup links when you can't signup+tag
remove signup links when you can't signup+commit
remove signup links when you can't signup+issues
there are several places (like the signin page) with signup links that show up regardless of a wagn's configuration.
remove signup links when you can't signup+solution
make them conditional