Completely integrate wepack in django

* Migrate alpine
* Migrate jquery and jquery-ui
* Migrate shorten
* Add babel for javascript
* Introduce staticfiles django app
* Only bundle -index.js files in static/webpack
* Unify scss and webpack generated files
* Convert scss calls to static
* Add --clear-generated option to collectstatic
* Fix docs warnings

staticfiles/storage.py

@@ -0,0 +1,41 @@
+from pathlib import Path
+
+from django.conf import settings
+from django.contrib.staticfiles.finders import find
+from django.contrib.staticfiles.storage import (
+    ManifestStaticFilesStorage,
+)
+from django.core.files.storage import Storage
+
+from staticfiles.processors import JS, Scss
+
+
+class ManifestPostProcessingStorage(ManifestStaticFilesStorage):
+    def url(self, name: str, *, force: bool = False) -> str:
+        """Get the URL for a file, convert .scss calls to .css ones"""
+        # This name swap has to be done here
+        # Otherwise, the manifest isn't aware of the file and can't work properly
+        path = Path(name)
+        if path.suffix == ".scss":
+            # Compile scss files automatically in debug mode
+            if settings.DEBUG:
+                Scss.compile(
+                    [
+                        Scss.CompileArg(absolute=Path(p), relative=Path(name))
+                        for p in find(name, all=True)
+                    ]
+                )
+            name = str(path.with_suffix(".css"))
+
+        return super().url(name, force=force)
+
+    def post_process(
+        self, paths: dict[str, tuple[Storage, str]], *, dry_run: bool = False
+    ):
+        # Whether we get the files that were processed by ManifestFilesMixin
+        # by calling super() or whether we get them from the manifest file
+        # makes no difference - we have to open the manifest file anyway
+        # because we need to update the paths stored inside it.
+        yield from super().post_process(paths, dry_run)
+        if not dry_run:
+            JS.minify()