url-list is supposed to be omitted in case of no webseeds,
but qB will instead use an empty bytestring '' as the value.
This commit makes the validation more lenient regarding url-list.
* Update isort settings
* Apply import sorting (isort) on all files in nyaa/
* Fixed Flake8 errors in nyaa/ (see PR for list)
* Add isort to lint.sh and requirements.txt
Added migration script!: remove sukebei_ lines if your local db does not have those.
Show users ip address on user page for superadmins.
Rename Admin to Moderator internally.
Moderators can now change user level to trusted.
Superadmins can make users moderator.
Improve changing user level.
This will allow most (if not all) torrents that have been rejected by 'Malformed torrent metadata (path part is empty)'
Adjusts _validate_bytes to disable empty check
Adds the empty check to file tree parsing
