Disallow Asset creation with an original URL from TNA

* Stops us shooting ourselves in the foot
Make url <- a bit easier to read

* Our URLs are now pretty long. Separate over lines.
Make CC::CaseCrawler able to crawl assets

* Also, fix a bug wherein it wouldn't visit index pages B-Z...
Breaking date case

* Now handles D.MM.YY as well as DD.MM.YY