Jenkins ChangeSet for http://dev.digital-humanities.de/ci/view/Top/job/TopicsExplorer/62/

chore: remove unused stuff	by severinsimmler
-docs/images/dariah-de_logo.png
-docs/CONTRIBUTING.md
-docs/images/bmbf_logo.png
-docs/images/screenshot.png
-Pipfile.lock
-docs/images/heatmap.png