Changed home and favicon colours. Using font instead of images on github profile links.
footer: Added mail icon to email
Pictonic font: Changed class name to .icon-topic-{{name}}
Added Git topic
Git / portuguese: Added 2 Books and Guides
Git / english: Added 3 courses
Git / portuguese: Added 1 screencast
Git / english: Added 2 tutorials
Git / english: Added 1 guide