Add admin dependency in all functions

[ddey2]

### Tasks
- [x] To set others as admin, (we need UI too)
- [x] metadata definition edition
- [x] modify elasticsearch which adds a clause to filter it by permission
- [x] modify dataset permission to take into account if you're an admin, modify the current dependency

[ddey2]

make an issue for approving users who have signed up

We can probably use keycloak to approve users