[ADD] Custom CSS module (First steps)

allianceauth/custom_css/admin.py

@@ -0,0 +1,22 @@
+"""
+Admin classes for custom_css app
+"""
+
+# Alliance Auth Custom CSS
+from allianceauth.custom_css.models import CustomCSS
+from allianceauth.custom_css.forms import CustomCSSAdminForm
+
+# Alliance Auth Framework
+from allianceauth.framework.admin import SingletonModelAdmin
+
+# Django
+from django.contrib import admin
+
+
+@admin.register(CustomCSS)
+class CustomCSSAdmin(SingletonModelAdmin):
+    """
+    Custom CSS Admin
+    """
+
+    form = CustomCSSAdminForm