Extract methods for leaf and branch nodes.
Extract small functionality to separate methods

extract addHypothesisNode method.
extract setVoxelNodeCPT method.
extract addVoxelNode method.
move some functionality to exportNetwork method.
change methods order
Change methods order
Remove unnecessary handlers
Fix method names

createBranchNode -> createBranchNodeChildren
createLeafNode -> createLeafNodeChildren
Add some TODOs.
Extract createChid method

Add some refactoring TODOs.
Merge branch 'feature/RefactorCreateNetwork' into develop
Add task for home testing