Revert "A4 T4"

This reverts commit 529bbee170881931712a1a881f568429568fa672, reversing
changes made to 0fc96cb869aba8b9304ad28fd44cda8600531386.
Objektstruktur und Iteratoren implementiert
added exception
Implemented Nodes using proper Polymorphism
Polymorphic Nodes with Iterators
pi = 3.1415926etc.
Licht transformation umgesetzt
SceneGraph funktioniert
Working with static instances and material injections
Passing objects instead of classobjects in Nodes. Allows instanceof testing. Is not that bad because only one object per iterator is needed (reference is passed).
cleaned up
Added RenderShapes
Again back to using the Class<> Object.

Testing via classreference.isAssignableFrom(Light.class)
This way it's certain, that Light implements/extends classreference.
marked cube- & shereRS as faulty, updated pom
Implemented primitives
Skybox mit Ebene

Shader ist seltsam... fehlerhaft?
Added Animation functionality and structures.
Moved @SuppressWarnings("unchecked") as close as possible to the source.
Animathor
Fixed bugs in shader and glRenderContext
RobotBoilder hinzugefügt, Animation wird durchgeführt