* added the ability the copy an existing workflow when creating a new role (closes#841)
* use a single raw insert statement to copy tracker/role workflow rather than instantiating hundreds/thousands of objects
git-svn-id: http://redmine.rubyforge.org/svn/trunk@1252 e93f8b46-1217-0410-a6f0-8f06a7374b81
Jean-Philippe Lang