Added user admin CRUD
Added 'Staff' permission level for events
Added user roles
First run at RBAC (Role-Based Access Control) on CRUD
Fixed ages in person
Added client-side error handling in forms
Updates to detail views, including social media and hiding multidata with no values
Small change to GUI to not show edit-delete buttons to people who don't have permission
Handle server-side authentication/permission errors (403) in client. Added permissions to People views.
Logging in returns you to the page where you began