[Blog] Minor Site Updates

• I borrowed the subscribe button from the ASP.NET website and put it on the sidebar to the left because it seems that a lot of people are using RSS syndicators that hard-code their search paths for [Main Page Of Blog]/* instead of looking for the proper [LINK] attribute in the page.
• I re-added a footer with my copyright notice and disclaimer.
• Some under-the-hood work preparing these posts for transfer into a new blogging system.