set at runtime. Exposes UmbracoContext via DocumentRequest which simplifies some things. Removes
dependency on UmbracoContext from DefaultRoutesCache, now InPreviewMode is checked before passing
processing to the IRoutesCache provider. Changed NiceUrls to NiceUrlResolver.
from the initial concept. The module is not active as it currently will not work because of
contructor dependencies and classes marked as internal, will liase with Stephen regarding this.
