extract method for loading controller
added classes for organisate nodes, not finished, yet
added test for visualize nodes
added defaultsize to visualize node
added visualNode size depends on childrensize
Delete const class
added new classes for size and position
begin test for overlapping
delete property scrollPane in a scrollPane
delete property anhcorPane in a anchorPane
extract method for labels
add new utilclass for loading fxml and setting controller to it
added new class for detect overlapping between two nodes. Added first tests
additional tests for overlapping
additional tests for overlapping
additional tests for overlapping
showing a node with two nodes
demo showing three nodes
first try to show nodecontent
showing nodes in a row, with overlapping