[pt_BR][Cookbook][Form][Data Transformers] Translation into Portuguese
[pt_BR][Cookbook][Form][Use Virtuals Forms] Translation into Portuguese
Update index.rst and map.rst.inc files
Remove non-translated documents
[pt_BR][Cookbook][Doctrine][Common Extensions] Translation into Portuguese
Update toctrees
Update README file
[pt_BR][Cookbook][Doctrine][The Architecture] Translation into Portuguese
Update REAME file
[pt_BR][Cookbook][Doctrine][Form Login] Translation into Portuguese
[pt_BR][Cookbook][Security][Form Login] Remove extra `
[pt_BR][Components][Console] Translation into Portuguese
[pt_BR][quick_tour][The Big Picture] Translation into Portuguese
[pt_BR][Components][ClassLoader] Translation into Portuguese
[pt_BR][Contributing][Community][Other] Update links
[pt_BR][Cookbook][Assetic][Asset Management] Translation into Portuguese
[pt_BR][Cookbook][Bundles][Best Practices] Translation into Portuguese
[pt_BR][Cookbook][Bundles][Extension] Translation into Portuguese
[pt_BR][Cookbook][Email][Gmail] Translation into Portuguese
Update book docs for 2.1