Swarm: add API to promote someone to an administrator
Goal
Because an administrator can leave, the swarm will have no administrator at the end. Make it possible for an administrator to promote someone else.
TODO
- Implement promotion/demotion (NOTE: no demotion if 1 admin) in the daemon
- Validate an API
- Add feature in clients
- Check demotion
Edited by Sébastien Blin