Organisation 2.0 "done"

Organization Importer 2.0 depends on Organization 2.0 and the new fields (such as Gender) that are introduced in this module.

The purpose of the new version, Organization 2.0, is three fold:

1. Upgrade the frontend to match the new visual design.
2. Implement Organization Versioning, so we know what a complete organization structure looked like at a certain point in time.
3. Include the new Excel Uploader (which was created for 3, a telecom company, to enable us to not only import employees, but also departments) in the frontend, so customers can start using it.