Ajustes

* Changelog
* Icones no Footer (no footer são imagens)

Issues relacionadas: 
https://github.com/locaweb/locawebstyle/issues/250
https://github.com/locaweb/locawebstyle/issues/254
https://github.com/locaweb/locawebstyle/issues/314
https://github.com/locaweb/locawebstyle/issues/315