Cannot save model when module rename_admin_paths is active

Moving this to the bpmn_io project as it is an issue there,

This was caused by a hard-coded path in the js file and is now replaced by a path derived from the route, which should be dynamic in case something altered it.

Now it works fine with these changes, thanks a lot!

Automatically closed - issue fixed for 2 weeks with no activity.

jurgenhaas → closed merge request !22