Scene loading issues

### false x- and z-rotation
Some objects have x- and z-rotation values when they should just be 0.

* ob_PARFUMERIE_ARBEITSRAUM
  * ordner_LICHT
    * ub_WANDLEUCHTER (2nd occurrence)

### false x- and z-rotation **and** inverted y-rotation

* ob_PARFUMERIE_ARBEITSRAUM
  * ordner_LICHT
    * ub_WANDLEUCHTER (1st occurrence)