Add Brazilian Portuguese and fix European Portuguese (#1966)

* update portuguese translation

added the missing fields and improved the translation

* pt translations fix

* improve last translation commit

* fix damn quotes

* add pt_br to index.jsx

* add pt-BR to import index.jsx

* add pt-BR to mastodon.jsx

* add pt-BR to settings_helper.rb

* add pt-BR to application.rb

* order alphabetically pt.jsx

* create pt-BR.jsx

* Create devise.pt-BR.yml

* language improvements to devise.pt.yml

* created doorkeeper.pt-BR.yml

* fixes to doorkeeper.pt.yml

* create pt-BR.yml

* improvements to pt.yml

* Create simple_form.pt-BR.yml

* Improvements to simple_form.pt.yml

* improvements to pt.yml