Add cases on homepage

[#393]
Improve cases section at home
Fix the link for espn-mobile case
New html and css for cases at home page
Fix some styles for new images
New images for cases on homepage
New images for cases on homepage
Add cases at english homepage
Add PT + EN text on home
Add line break on the cases title for homepage
Fix responsive html and css
Merge branch 'master' into cases-on-homepage

Conflicts:
	stylesheets/style.css
Merge branch 'master' of github.com:Helabs/helabs.github.com into fr-cleanup-and-leverage-gh-pages-v22

Conflicts:
	stylesheets/style.css