Issue title: Look into Dimple
 Issue body: As per
https://github.com/fnielsen/scholia/issues/113#issuecomment-302747849 ,
WDQS visualizations are based on http://dimplejs.org/ , which uses https://d3js.org/ .

 Comments: 
 Comment 0: cc @ammar257ammar  (Dimple is a derivative of d3.js)
 Comment 1: See also Ammar's previous work: https://github.com/ammar257ammar/scholia/blob/flask-cache/scholia/app/templates/iframes/organization.html#L36
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