enable github mirror and pages github action

GitHub Action

• Dummy example test for GitHub-action

• Extend example to feature preprocessing with python

• Test/Adapt documentation for the workflow

• Some of the files need to be adapted with the corresponding URL of GitHub pages (see .gitlab-ci.yml)

sed -i -e "s;baseurl.*;baseurl = \"${REVIEW_BASE_DIR}/\";" config/production/config.toml
sed -i -e "s;/js/pontifex-graph.js;${REVIEW_BASE_DIR}/js/pontifex-graph.js;" layouts/shortcodes/header1.html

In our case it should be https://HOOU-TUHH.github.io/pontifex-hugo/, see here

baseurl needs to read /pontifex-hugo/ then it should work

If !46 (merged) has been merged, one can reduce automatization and just tell the user to set the baseurl in the config.toml manually

Mirroring

• Wait for #33 (closed)
• Discuss the mirror's location and affiliation: https://github.com/HOOU-TUHH/Pontifex-Hugo
• Create repo for mirror
• Link VSSUE to new repo on GitHub
• Create keys etc.
• Setup {BASE_DIR} variable on GitHub