Remove jQuery binding.
Can no longer pass [$el, 'click', fn] style arguments to
delegateEvents. We could always re-introduce this, but I think it
probably encourages an anti-pattern, i.e. views binding events to
things other than their own element.
Use `listenTo` and `stopListening` for event delegation.
Can no longer pass a context to these bindings, but that's probably an
anti-pattern anyway.
Do not check for _.singularize before calling it.
If _.singularize isn't there, it should not silently fail, since
failure here will cause some functionality to break.