Merge pull request #5 from spleenteo/master

Added some labels for languages translations in it and en yaml files
Tabs are red if contain errors
Fixes assets precompile on Heroku
Default available locale is pt-BR instead of pt.
Add pt-PT key to english and italian locales.
Added pt-BR.yml locale file.
Added pt-PT.yml locale file.
Merge pull request #8 from joanamartins/master

Fix 'pt' locale key and add translations for pt-BR and pt-PT
Ability to switch locale
hints: how to use dashed locale keys