Added CodeHTMLer project at codeplex

In order to help better manage changes to CodeHTMLer I finally added the project on codeplex at http://codeplex.com/CodeHtmer.

I made a couple of small code updates after I put it up on codeplex:
- Added a new language property DivInlineFont to define the font to use when not using pre tags.
- Added a language definition for F# (thanks to Harry at Blogging in F#)
- Fixed the CodeHTMLer library so it runs in a medium trust environment (needed this because I just moved web hosts and the new one runs in medium trust level, more about the details later).

Thus far codeplex seems pretty cool but I guess I will only be able to realize its full collaboration potential when I actually have more contributors than just myself.