Release 2.8.1

### Added

- Add a way to know the role and permission of the logged user in `/api/users/me`.
- Add the ability to update an upload set parameters through a `PATCH` on `/api/upload_sets/:id`.
- Add a debug endpoint `/api/debug_headers` that can be handy when setting a new instance to check if the proxies are correctly setting the headers.

### Fixed

- Fix a bug where dispatching several time the same upload set would not cleanup unused sequences.

### Changed

- Only display `tos_accepted` field in `/api/users/me` if ToS are mandatory.