Merge branch '232-use-simplified-ssh-commands' into 'preview'

...sden.de/docs/access/graphical_applications_with_webvnc.md

doc.zih.tu-dresden.de/docs/contrib/content_rules.md

...u-dresden.de/docs/software/hyperparameter_optimization.md

doc.zih.tu-dresden.de/docs/software/mathematics.md

doc.zih.tu-dresden.de/docs/software/tensorboard.md

doc.zih.tu-dresden.de/docs/software/vampir.md

doc.zih.tu-dresden.de/docs/software/visualization.md