Category links do not specify correct URLs when browsing Subtext blog pages using HTTPS

[jeremy-jameson]

When browsing to a Subtext blog page using HTTPS (e.g. https://www.technologytoolbox.com/blog/jjameson), the category links in the response contain absolute URLs that specify "http://" and port 443 (e.g. http://www.technologytoolbox.com:443/blog/jjameson/category/4.aspx). The category links should instead specify "https://" and no port number (e.g. https://www.technologytoolbox.com/blog/jjameson/category/4.aspx).