Translations Request - RedMine #1817

The translations are updated and part of them are translated now.
Translation Request - RedMine #1817

README.md file is with updated version, because part of the translations
are translated and updated.
Translation Request - RedMine #1817

Additional translation for the english
Modification of how to detect v1 and v3 users

Modification of how to detect v1 and v3 users - RedMine issue #2217
Merge pull request #22 from mailjet/development

Merge the development and master branches