use-symbols in collapsible tree, improve css
changed  to iMac
use-case folder as local property
max graphic relations as property
refactored collapsible tree to use some d3 plugins
move prototype to own file and start simplifying force-directed-graph
new symbols, all correctly positioned
clean up
refactoring duplicated code
more refaktoring
move helper functions to ogvic.js
prototype for enter
clean up
path-aligned-label in collapsible-tree
bringing together chart files
clean up, first licensing, further merging
refaktoring highlighting
quick fixing missing graphic attributes in tree data
more shapes
first set of concrete use case "tests"