As described in https://github.com/alshedivat/al-folio/issues/300,
standard Markdown code highlighting doesn't work in the Distill template
because it is clobbered by the Distill "Prism" syntax highlighting. This
PR will allow d-code tags (distill-specific code tags) to function with
the Distill syntax highlighter, but will default `highlight` and
Markdown code blocks to use the Jekyll/Rouge highlighter.
This PR also removes overrides.js, which is currently broken because
jquery isn't loaded.
summary:
- adds prettier formatter configuration
- formats the entire repo using prettier, ignoring minified files
(`*.min.css`) and heavy generated html
- changes extensions of all `.html` files to `.liquid`, which is more
correct and necessary for prettier to work correctly
- replaces "%-" and "-%" with just "%" — manual liquid formatting using
minus signs is superfluous since we are compressing and minifying the
code anyway
- adds CI action for running prettier check on PR and pushes to master
