Fix bugs with new asc2.0 compiler

[hyzhak]

Current repo has:

• same name getter-setters and property in some classes;
• indexOf with Object on vector with Object3D;

only with that fixes Alternativa3D can compile with asc2.0.

[Yaski]

I've merged. Thank you very much for fixes!

[hyzhak]

no problem, i have one more ;)