Item12313: replaced WORKFLOWLAST*_* macros with WORKFLOWLAST*{"*"} so they can be handled by registered tag macros. Added test for  WORKFLOW* macros to avoid pointless processing. Item12986: fixed problem with changing forms over a transition

git-svn-id: http://svn.foswiki.org/trunk/WorkflowPlugin@17866 0b4bb1d4-4e5a-0410-9cc4-b2b747904278