Allowing more options to style pretix shops (#1585)

* Fix caching issues in SASS compilation

* Allow to set a custom page background color

* Allow to disable round corners

* Support larger header pictures

* Allow to show title despite header

* Move language picker

* FIx widget styles

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

@@ -1,9 +1,11 @@
 import hashlib
 
 from django.conf import settings
+from django.core.cache import cache
 from django.core.files.base import ContentFile, File
 from django.core.files.storage import default_storage
 from django.core.management.base import BaseCommand
+from django.utils.timezone import now
 from django_scopes import scopes_disabled
 
 from pretix.base.models import Event_SettingsStore, Organizer_SettingsStore
@@ -16,12 +18,27 @@ from ...style import regenerate_css, regenerate_organizer_css
 class Command(BaseCommand):
     help = "Re-generate all custom stylesheets and scripts"
 
+    def add_arguments(self, parser):
+        parser.add_argument('--organizer', action='store', type=str)
+        parser.add_argument('--event', action='store', type=str)
+
     @scopes_disabled()
     def handle(self, *args, **options):
-        for es in Organizer_SettingsStore.objects.filter(key="presale_css_file"):
+        # Reset compile cache
+        cache.set('sass_compile_prefix', now().isoformat())
+
+        ostore = Organizer_SettingsStore.objects.filter(key="presale_css_file")
+        if options.get('organizer'):
+            ostore = ostore.filter(object__slug=options['organizer'])
+        for es in ostore:
             regenerate_organizer_css.apply_async(args=(es.object_id,))
 
-        for es in Event_SettingsStore.objects.filter(key="presale_css_file").order_by('-object__date_from'):
+        estore = Event_SettingsStore.objects.filter(key="presale_css_file").order_by('-object__date_from')
+        if options.get('event'):
+            estore = estore.filter(object__slug=options['event'])
+        if options.get('organizer'):
+            estore = estore.filter(object__organizer__slug=options['event'])
+        for es in estore:
             regenerate_css.apply_async(args=(es.object_id,))
 
         gs = GlobalSettingsObject()