Fix admin for Info.

src/info/admin.py

@@ -1,6 +1,22 @@
 from django.contrib import admin
 from .models import *
 
-admin.site.register(InfoCategory)
-admin.site.register(InfoItem)
 
+@admin.register(InfoItem)
+class InfoItemAdmin(admin.ModelAdmin):
+    list_filter = ['category', 'category__camp',]
+    list_display = ['headline',]
+
+
+class InfoItemInlineAdmin(admin.StackedInline):
+    model = InfoItem
+    list_filter = ['category', 'category__camp',]
+    list_display = ['headline',]
+
+
+@admin.register(InfoCategory)
+class InfoCategorydmin(admin.ModelAdmin):
+    list_filter = ['camp',]
+    list_display = ['headline',]
+    search_fields = ['headline', 'body']
+    inlines = [InfoItemInlineAdmin]