Request params

- [x] get accreditation labels
- [x] add password modification
- [x] add remove user request
- [x] add accreditation on client side
- [x] add service to get current user
- [x] add new user request
- [x] block accreditation modification on current user
- [x] block accreditation modification same or higher than current user level
- [ ] see `u_expiration` and `u_modifie`
- [ ] stop view after 10 users