Add Copy/Paste for nodes
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into develop
Just cleaning
Add __str__ for the graph
Add getNode function
Add getNode function in nodeWrapper and use the map for parameters in node
Undo/redo works for create/delete nodes and create/delete connections
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into develop

Conflicts:
	buttleofx/core/graph/node/node.py