Fix columns settings edition in page editor.
Use locales instead of hard coded texts.
Merge pull request #658 from intportg/dev

Fix columns settings edition in page editor.
Locales updated
Merge pull request #659 from franckstauffer/i18n

Locales updated
Merge pull request #660 from inthause/documents

Refactor Commerce 'Managers'
Add new admin http rule I18nPackage/<LCID>/<Package>.json