Rename node link generator to quadrantLayout
Add elements to toolbar for search and filtering
Add CSS for the toolbar
Add basic search, without interface
Add search UI. Show query matches in red
Change highlighted node to blue
Add TODO and comments
Bring entity_type nodes closer to leave space for their children
Remove arrow heads. Add animation for nodes and links
Change iterpolation and transition time
Space the nodes out vertically
Highligh search if nothing was found