some improvements on how the media pages look

_conferences/5min.md

_conferences/freitalk.md

_conferences/hoth23.md

_conferences/nook2017.md

_conferences/nook2018.md

_conferences/nook2019.md

_conferences/nook2022.md

_conferences/nook2023.md

_config.yml

_includes/metaog.html

_includes/site-feature.html

_includes/video.html

_layouts/frab.xml

_layouts/video.html

_media/2023-05-12-baumbilanzen-befreien.md

_posts/blog/2023-12-30-2023.markdown

_sass/_normalize.scss

assets/5mintlogo.png

assets/chaotikumlogo400.png

assets/hoth.png