Added runtime SASS compliation and color settings

src/pretix/presale/management/commands/updatestyles.py

@@ -0,0 +1,13 @@
+from django.core.management.base import BaseCommand
+
+from pretix.base.models import EventSetting
+
+from ...style import regenerate_css
+
+
+class Command(BaseCommand):
+    help = "Re-generate all custom stylesheets"
+
+    def handle(self, *args, **options):
+        for es in EventSetting.objects.filter(key="presale_css_file"):
+            regenerate_css(es.object_id)