Remove leading separator from breadrumbs on search results page
Make tables more readable
Add GitHub Flavored Markdown support

- GFM-support is optional and not enabled by default.
- GFM renderinge can be set with the `-g' command line switch.
- When usign `-g' EVERYTHING is rendered using the `github-markup'
  gem (not only Markdown!).
Remove HAML-induced newlines from `pre' and `code' tags
Fix nasty typo/bug: `github/markup' instead of `github/markdown'
Fix header layout
Bump the version number