Add usages and improve home page links and carousel.
Rename directory containing logos.
Add 2 new visualizations. Add "featured" flag to visualizations.
Add Stanislas to developpers.
Add navigation and improve menus.
Change OpenFisca description title.
Improve OpenFisca description title.
Rework home page links.
Add subdomain handling to Piwik marker.
Add link to Piwik stats.
Improve wording.
Add 2 utilizations: UI and formulas browser.
Add skeleton for contribute page.
Improve presentation page and some links and titles.
Improve license and links to it.
Improve presentation