Cannot edit existing Group Of Stop Place due to forced full refresh

[esuomi]

When trying to edit a Group Of Stop Places entity the page does a full reload when navigating to the link. This causes the user session data to get erased and thus the editor won't allow modifying or deleting the GOSP information as the user is now logged out. Logging back in causes another reload closing the modal view.

This bug is triggered when navigating to GOTG editor view from a single StopPlace's GOTG membership listing.