Show groupfolder in related resources

[AndyScherzinger]

if it is an exact match (i.e. talk room of a circle or else. Again, needs to be an exact match, so only show it if the groupfolder has assigned a single circle and nothing else and only show it it the other entity is also just linked to that single circle and nothing else)

[AndyScherzinger]

@ArtificialOwl you might want to look into this, maybe this is already a given, but I doubt it since groupfolders didn't support circles just yet.

[ArtificialOwl]

(wip) #225

less simple that I previously though as it needs to be sligthly integrated to files also to manage resource related to current folder mapping when browsing a group folder.

[Pytal]

Tracking frontend in #230