Add default bindings for restful scopes (just `action` for now).

Requires several changes, including:

- Evaluate if value of :content is a proc (allows us to add a field to
the form and prevents knowledge of the view from the binder)
- When populating a route let data be optionally passed in
- Name restful routes
- Bug fixes related to parsing route name from args and return value
from name based route lookup