better logging of needed angeltypes for shifts and rooms

includes/pages/admin_rooms.php

@@ -118,9 +118,11 @@ function admin_rooms()
                         $angeltype = AngelType($angeltype_id);
                         if ($angeltype != null) {
                             NeededAngelType_add(null, $angeltype_id, $room_id, $angeltype_count);
+                            if($angeltype_count > 0) {
                                 $needed_angeltype_info[] = $angeltype['name'] . ': ' . $angeltype_count;
                             }
                         }
+                    }
 
                     engelsystem_log(
                         'Set needed angeltypes of room ' . $name

includes/pages/admin_shifts.php

@@ -338,9 +338,11 @@ function admin_shifts()
                             $count
                         ]
                     );
+                    if($count > 0) {
                         $needed_angel_types_info[] = $angel_type_source['name'] . ': ' . $count;
                     }
                 }
+            }
             engelsystem_log('Shift needs following angel types: ' . join(', ', $needed_angel_types_info));
         }