KRACOEUS-7109 : Initial Multi-PI to real role work. Needs addtional work.

Apparently you can't merge this yet which is good because I mostly want a review of the nature of these changes. Particularly the idea of removing the strong db link to the role and instead resolving the role based on a Dao related to the sponsor and sponsor hierarchy.

Still to clean up a lot of references and places where we grab and store the role descriptions from parameters and readonly-ness from PD, IP and Award.