fix(broadcasting): broadcast on mark_helped! even when already false

- mark_helped! gated broadcast on if save, but save returns false
  when needs_help is already false (no dirty attributes in CouchDB)
- Same fix applied to remove_needs_payment!
- Broadcast is the important side effect — save is just persistence

app/models/list.rb

@@ -236,23 +236,21 @@ class List
 
   def mark_helped!
     self.needs_help = false
-    if save
-      broadcast_users 'list_helped', id: id
-      broadcast_supplier supplier_id, 'list_helped', id: id
-    end
+    save
+    broadcast_users 'list_helped', id: id
+    broadcast_supplier supplier_id, 'list_helped', id: id
   end
 
   def remove_needs_payment!
     self.needs_payment = false
-    if save
-      broadcast_users 'remove_list_needs_payment', id: id
-      broadcast_supplier supplier_id, 'remove_list_needs_payment', id: id
-    end
+    save
+    broadcast_users 'remove_list_needs_payment', id: id
+    broadcast_supplier supplier_id, 'remove_list_needs_payment', id: id
   end
 
   def needs_payment!
     self.needs_payment = true
-    if save
+    save
       broadcast_users 'list_needs_payment', id: id
       broadcast_supplier supplier_id, 'list_needs_payment', id: id
     end