Conversion of Scripts to Python 3 and Bugfix

[wonderbird]

Summary

This PR finishes the work started by @HelgeCPH in PR #7. After this PR has been merged, PR #7 can be deleted.

Changes

• Convert code to Python 3 and change the code style accordingly
• Merge master and fix merge conflicts
• Fix: parsing csv fails because of binary mode
• https://github.com/wonderbird/maat-scripts/pull/2
• Fix: #10.