Names might have made sense at some point... but not so sure anymore
build_pdf => pdf
build_booklet => booklet
build_serif_pdf => serif
build_sans_serif_pdf => sans_serif
build_ebook => ebook
build_bw_ebook => bw_ebook
build_low_res_ebook => low_res_ebook
Old names kept not to break backward compatibility
Do not run test-book-website on main push
This makes little sense to run it again.. we already did run twice on
branch push and for the PR request. And we will run the exact same
thing and more (sans-serif, actual release etc) in release-book-website.
* Validate website format
This validates the format of the website and throws an error if
something is fishy.
* Remove -j flag
* clean build
* Clean cache in between