Relationship with external issues

[JeremyOWO]

Hello All,

With the actual plugin, the children from external project aren't displayed.

I understand that only issue from current project are used as parent issue but then all children should be displayed.

I'm going to provide a pull request for this issue.

We could also add a conf to display all children or only current project children's

Best Regards

[JeremyOWO]

Pull request created : https://github.com/mantisbt-plugins/Taskodrome/pull/318