Start book entity
Merge branch 'master' into feature/books
WIP: add book model
Add javascript support
Add Monged Generator
Correct new book
WIP: add view for book
Add debugger
Correct edit route and view
Add create translation modification
Add form_url method
Add all form urls
Working update
Add route to add translation
Correct creation of translation
Destroy translation
Delete books with no translation
Correct form_path variable name
Place form_url inside helper
Correct back button