Language support for the wizard

[krausandre]

As an editor, I want to use the wizard with my language settings, so that I better understand what to do.

Acceptance criteria

• (Support english)
• Support german
• Support for france?
• Every text is outsourced to a xlf file

... I think this could be a goal for v3 or v4.

[typecat]

We'll postpone this, due to the current focus on the content blocks sysext