Add functionality to add role.

[cyclops1982]

AddRole seems like a simple method, but it requires at least one roleitem. Add K2 service as default?

[pblommendaal]

I do not want to add Roles to the system, but RoleItems. But it can be a method of the solution off course. Also RoleItems need to be of a specific label, I thought to implement a Search method (see Add Role Item in the K2 workspace what you can do there for the options) for that so you can provide a search view for the process manager who's managing the roles.

[cyclops1982]

Creating another issue for the search.
The AddRoleItem is already in there :-)