Added a feed for the about page and hooked it up to the application

Added the feed for the about page.
I moved the template to the base template directory and then in nar_common/urls.py I specify the url using the TemplateView directly there. Since the only thing we are assigning is the template name, I think this is fine. Also since these pages are kind of application wide, I don't think they belong in the nar_ui directory.