Merge branch 'prepare-release-2.1' into 'master'

Prepare release 2.1

See merge request !99
9 jobs for weblate in 12 minutes and 1 second (queued for 4 seconds)
Name Stage Failure
failed
deploy_gitlab Publish
      214│                     raise UploadError(e)
215│
→ 216│ raise UploadError(e)
217│
218│ def _do_upload(
219│ self, session, url, dry_run=False
220│ ): # type: (requests.Session, str, Optional[bool]) -> None
Cleaning up project directory and file based variables
ERROR: Job failed: exit code 1