Update JS dependencies and misc tweaks (#13741)

* Update JS dependencies and misc tweaks

- Update all JS dependencies minus webpack
- Adapt CodeMirrors styling to new CSS parent introduced by EasyMDE
- Set eslint parser to latest and add new eslint 7.14 rule
- Speed up npm install by disabling audit and fund checks
- Move fomantic-ui to optional dependencies to further speed up npm
- Enable syntax highlighting on GH for .eslintrc and .stylelintrc
- Makefile cleanups

* disable audit in npmrc

* add missing dash

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

.gitattributes

@@ -2,3 +2,5 @@
 /vendor/** -text -eol linguist-vendored
 /public/vendor/** -text -eol linguist-vendored
 /templates/**/*.tmpl linguist-language=Handlebars
+/.eslintrc linguist-language=YAML
+/.stylelintrc linguist-language=YAML