Partials, conent loading, routes, oh my!

Added support for partials in the template renderer, making templates
many much more betterer.  (Yep.)  Also made the content loading
mechanism more robust, able to handle delivering content for both
template needs and requests for specific types from something like AJAX.
Also, now each type of content has its own route, and can be accessed
via hitting the appropriate category for it; namely
[domain.com]/[category]/[option specific index].
Modularized template files, and initial login work.

Now most of the templates are partials.