- Fix Import from Trello error 400.
- Fix Import from Trello error 400.

Thanks to xet7 !

GhassenRjab/wekan,wekan/wekan,GhassenRjab/wekan,wekan/wekan,wekan/wekan,GhassenRjab/wekan,libreboard/libreboard,wekan/wekan,libreboard/libreboard,wekan/wekan