Reverse Routing #3

Need to add Reverse Routing ability to the router library for a couple of reasons:

• Allows a simpler way to add links in views that protects against the route changing.
• Will allow us to restrict the redirect() method to only routes that exist on the site (assuming that the app is requiring all routes to exist in the routes file. This helps to address the OWASP's Unvalidated Redirects and Forwards attack.