Add a sitemap for sitemaster

Right now www.unl.edu isn't being scanned because it redirects for internal IP addresses. Thus, webaudit (sitemaster) does not see anything to crawl. This will give sitemaster some pages to start crawling.

@erasmussen2 I'm not sure how things are set up on the server. Will this be available at www.unl.edu/sitemaster.sitemap.xml or do we need to add some sort of .htaccess logic?