Moving files to old_nodes
Clean up of version code
d_s To avoid error while working with links
Load old nodes typrs
Cleanup in node tree
Upgrade nodes to new style verticessocket
Group -print
Merge branch 'toProcess' of https://github.com/nortikin/sverchok into toProcess
Slightly better feedback for bad props.
init fixes for old nodes F8
Support for loading old nodes when needed via I/O
Merge branch 'toProcess' into colors_menu

Conflicts:
	node_tree.py
menu fixing