reorder admin for purchase

tournaments/admin.py

@@ -63,7 +63,7 @@ class ClubAdmin(admin.ModelAdmin):
     list_display = ['name', 'acronym', 'events_count']
 
 class PurchaseAdmin(admin.ModelAdmin):
-    list_display = ['user', 'identifier', 'purchase_date', 'product_id', 'quantity']
+    list_display = ['user', 'identifier', 'product_id', 'quantity', 'purchase_date', 'revocation_date']
 
 class CourtAdmin(admin.ModelAdmin):
     list_display = ['index', 'name', 'club']