Speed up application logic/loading time of the index page

It'd be nice to show all of the routers on a single page for some clients, but an unpaged index page loads far too slow to consider doing this at the moment. Even the paged index page loads slower than it should. To remedy this, an upper bound on the "Relays Per Page" parameter has been set at 200 relays per page.

Preliminary testing hints that this may be a problem may be related to the speed of Django's template logic, but there are likely other reasons that the page loads so slowly.