Properly clean up svg graphics when node/link removed
Properly clean up svg graphics when node/link removed

hochshi/VivaGraphJS,rlugojr/VivaGraphJS,dikshay/VivaGraphJS,rlugojr/VivaGraphJS,hochshi/VivaGraphJS,aigeano/recommendation-visualizer,rshipp/VivaGraphJS,rshipp/VivaGraphJS,aigeano/recommendation-visualizer,dikshay/VivaGraphJS