Enable FeedbackResponses in admin

server/vbv_lernwelt/feedback/admin.py

@@ -0,0 +1,9 @@
+from django.contrib import admin
+
+from vbv_lernwelt.feedback.models import FeedbackResponse
+
+
+@admin.register(FeedbackResponse)
+class FeedbackResponseModel(admin.ModelAdmin):
+    list_display = ["course_session", "circle", "created_at", ]
+    list_filter = ["course_session", "circle"]