Add support for view functions in static views

[SLaks]

You can now create view functions on Static instances and use them in server-side static views.

Usage:

var staticPages = derby.createStatic(root);
staticPages.view.fn('name', function(...) { ... };

[nateps]

Thanks for submitting, and sorry I never got a chance to review on the previous Derby code. Derby has needed a complete overhaul internally for some time, so I'm closing all pull requests for previous version of Derby.

Master of Derby is now 0.6 and I am cleaning up previous issues so that I can be more responsive to new issues.