#5522 Allow project to be part of more than one neighborhood
Projects are currently restricted to one neighborhood, and moving from one neighborhood to another results in a change in various URLs.
I'd like to have a project be part of more than one neighborhood. For example, in addition to the overall 'p' neighborhood, I'd like to have a 'games' neighborhood where game projects can be part of a smaller gathering - a neighborhood of related projects.
This would increase synergy between projects, and encourage them to have shared resources (wiki, mailing list, perhaps even shared code) where they could collaborate on shared ideas or shared implementations, to the benefit of all.
I think this would require a new concept besides neighborhoods. It's more or less inherent in neighborhoods that they are unique and define the URL hierarchy.