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

sas/templates/sas/album.jinja

@@ -2,7 +2,7 @@
 {% from 'core/macros.jinja' import paginate_alpine %}
 
 {%- block additional_css -%}
-  <link rel="stylesheet" href="{{ scss('sas/css/album.scss') }}">
+  <link rel="stylesheet" href="{{ static('sas/css/album.scss') }}">
 {%- endblock -%}
 
 {% block title %}

sas/templates/sas/main.jinja

@@ -1,7 +1,7 @@
 {% extends "core/base.jinja" %}
 
 {%- block additional_css -%}
-  <link rel="stylesheet" href="{{ scss('sas/css/album.scss') }}">
+  <link rel="stylesheet" href="{{ static('sas/css/album.scss') }}">
 {%- endblock -%}
 
 {% block title %}

sas/templates/sas/picture.jinja

@@ -1,7 +1,7 @@
 {% extends "core/base.jinja" %}
 
 {%- block additional_css -%}
-  <link rel="stylesheet" href="{{ scss('sas/css/picture.scss') }}">
+  <link rel="stylesheet" href="{{ static('sas/css/picture.scss') }}">
 {%- endblock -%}
 
 {%- block additional_js -%}