Add navigation menu to config.
Override default font to a GWF.
Generate navbar from info in config.
Merge pull request #17 from jrha/master

Add downloads link to menu
Merge branch 'master' of github.com:jrha/quattor.github.com

Conflicts:
	_config.yml
	_includes/menu.html
Merge branch 'master' of git://github.com/quattor/quattor.github.com