WIP - Translated to Portuguese from Portugal, root files, community folder, and some files inside what_is_symfony
WIP - Added get_started translations; renamed Best Practices to Melhores Práticas
Merge remote-tracking branch 'origin/pt-translation' into pt-translation
Merge pull request #1 from andreia/pt-translation

[What is Symfony][In Five Minutes] Translate into Portuguese
Merge pull request #2 from andreia/pt-translation

[What is Symfony][Elevator Pitches] Translate into Portuguese
Added the remaining two files; fixed some description headers; fixed some translations
Some fixes