Provide Version management in KanBan plan mode

Provide the same version management in KanBan plan mode as you do with sprints.

Even with KanBan, as a product owner, you still define themes and minimum viable necessary for a release. I still assign them to a version and once we have something ready for release, we do.

Having the same version support allows us to have the same processes for either board vs having to go into JIRA to do version management and reporting or create an artificial sprint board to do this - both are disruptive to processes when it is inconsistent with scrum boards.