[Fix Cards disappear when rearranged on template board](https://github.com/wekan/wekan/issues/2266).
[Fix Cards disappear when rearranged on template board](https://github.com/wekan/wekan/issues/2266).

Thanks to andresmanelli !

Closes #2266

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