because the CSS was lazy-loaded the rules in arc-green did not win.
included the css file in the main bundle to fix. the black dots can not
be fixed via CSS because they are drawn in a `<canvas>` element
unfortunately.
* move semantic.dropdown.custom.js to webpack
Also disabled a annoying linter rule which insisted that imports can not
contain a file extension.
Fixes: https://github.com/go-gitea/gitea/issues/8971
* reorganize web_src files and rebuild
* restart ci