test a loading and changing stuff
stilll testing code
creation and edition of the graph database

Graphical vizualisation of the creation and edition of the graph
database.
Revert "creation and edition of the graph database"

This reverts commit be2006f17e4b53906d63670bd6238baf00c173ea.
Creation and edition

creation and edition of graph daba base together with a graphical
vizualizatino of the performances