Add sponsorssection aa2 to master

[kleberbaum]

The content of the sponsor text has been adjusted.

Checklist:

• [ ] Have you added an explanation of what your changes do and why you'd like them to be included?
• [ ] Have you updated or added documentation for the change?
• [ ] Have you tested your changes with successful results?

Type of Changes:

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [x] Documentation (non-breaking change which adds documentation)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

What is the current behavior? (link to any open issues here)

• Currently the content of the sponsor text is not fitting.

What is the new behavior (if this is a feature change)?

• Now the content of the sponsor text is ok.

[schettn]

please merge add-sponsorssection-aa2 into implement-1