* refactor: add schemas to user admin controller
* refactor: remove unused SessionService
* refactor: fix search query type confusion
* refactor: add schemas to user controller (#1693)
* refactor: add schemas to user controller
* refactor: fix getAllUserSplashes method name
* refactor: name and email should not be required on create
* refactor: only some user fields may be updated
* refactor: should not require any fields on user update (#1730)
* refactor: send 400 instead of 500 on missing username and email
* refactor: should not require any fields for user update
* refactor: note that earlier versions required name or email
* refactor: merge roleDescriptionSchema and roleSchema
