Manage Provider Attribute Types

As a user i should be able to add, update, delete, retire and unretire and purge provider attribute types.

Dev Notes

• This needs to be done with angular JS+REST, for an example see this commit 7a2349a15b9a7d733d9829742a82471b96c1f0f9
• You will need to add a provider attribute type service and test to the uicommons module for making rest calls, for an example see b968845483a3520474ab53ab3dd20ee50e77213f
• See the 'Manage Encounter Encounter Types' to follow as a guide for behavior and look in the UI