added the new member variable aabb to FastKdTree, so the AABB of the
whole tree is stored classwide.
removed debug stuff for the triangleIntersectionCheck, because Simon
told me he fixed the problem
added a method to check intersection for ray and plane
put the triangleIntersection claculations outside of the FastKdTree
fixed the MathUtils to static methods and now uses them in the
FastKdTree
now the intersectRayWith3DSegmentPlane method returns the float as the
disntace to the triangle

the method checkAllTriangles now only takes the nearest triangle
added a stub for Ray/AABB intersection test
Insersection test extended: Now it checks for the leaf in which the
current focused point is located in
added the while-loop to go over all leafs in the algorithm for
intersectFirst
created two method to get the right and left iterator of a
FastKdTreeNode

the skeleton of the algorithm for triangle intersectFirst test is nearly
finished.
added the complete Ray/AABB intersection test

change one method header to fasten up the program a bit (pointer passing
instead of creating new objects)
added a method to get the axisOffset of the KdTreeNode
finalized the method to get the leaf of a given point and kdtreenode