UPDATE FROM 05.04.2017

[pervokpetr]

Significan change in transformation porcess, unfortunate it changed all hook objects, lights and so on rotation different and now you should adjust all transforms for your objects, but for now you can use in-game manipulators to adjust object transformations.

New update was sent - manipulators for control object transforms. Use middle mouse button to drag manipulators.
1. Translation - performed in global world space.
2. Rotaions - performed in local object space. Hold CTRL button to switch manipulators in rotation mode
3. Scaling - performed in local object space. Hold SHIFT button to switch manipulators in scaling mode
4. The smallest green box in rotation mode show positive Z direction, which are assumed as front of object, for light it means light direction.
5. Do not forget save level after your changes

I STILL ASSUME THIS UPDATE AS EXPERIMENTAL - it should be polished/fixed/correctd, but now I need some testing. Known bugs: some problem with environment map loading for default room and customizer, wrong message "loading h5m fail", although models are loaded.