allow scopes to return AR models as well

[catmando]

AR lets you do this: scope :foo -> () { self }

but hypermesh expects scopes to always return relationships

you can effectively get this result by doing scope :foo, -> () { .....all } in other words apply all to every scope. This works except if you were to do this:

MyModel.unscoped.foo which would apply all when it shouldn't. So its a bit harder that automatically doing the above.