- changed the construcotr of the fastKdTree. Now only the needed stuff
is passed: axisOffset, axis and if it's a leaf or not
- fixed a compiling bug in the testmain.cpp
- added the stub to "intersectFirst(...)" in FastKdTree

need to talk again about TrinalgeIterator as children
Merge branch 'fastkdtree-SS13-group1' of https://github.com/happah-

Conflicts:
	happah/testmain.cpp
Merge branch 'fastkdtree-SS13-group1' of https://github.com/happah-graphics/happah into fastkdtree-SS13-group1