Add the translation of model introduction
Add the translation of defining-a-store
Add the translation of defining-models
Fixed the title
Keep it up-to-date
Fixed wording
Removed the comments in English
Fixed the wrong url
Removed the extra headers
Translated classes and objects
Removed the English headers
Update the translation
Fixed tranlation
Update the translation
Update the translation
Removed the unused file
Translated setting up a controller
This file is in using
Bilingual guides shares the same data with guides
Translated the introduction of controllers