Most URLs in the product properly resolved using registered URL names,

and registered by specifying the view itself rather than a string

representing the path to the view. We had a few that haven't yet been

updated, though. Namely, some URL building/references to administrative

URLs, and the static media views.
This updates the admin URL references to use URL names, and adds a

missing URL name for the main admin dashboard. It also updates the URL

registrations for the debug-only /static/ and /media/ URLs to

specify the view itself instead of a string representing the view.

Unit tests pass on Django 1.6 and 1.11 (with other in-progress changes).
Tested the resulting URLs in the affected templates, and that both

static media and uploaded media work.