Use bootstrap, update default template.

Wipe clean the default CSS. Format site.hs. Add a batch file for setting
the code page in the DOS shell. Add sample posts with fsharp and haskell
code. Add a gitignore. Add CSS for pandoc, solarized, bootswatch
readable and font awesome. Update the default template to use bootstrap.
Add the Block Scope logo as a asciimathml formula.