Scaling lodlive-graph-context div

[grtjn]

I was playing with an implementation of zoom buttons on the lodlive legend included in ml-lodlive-ng, but I notice that once you have transform scaled the lodlive-graph-context div (which works reasonably well), new relations, and nodes when expanding, are drawn in the wrong place. Looks like a counter-measure needs to be taken to compensate for this.

Maybe better if lodlive would come with an object that provides zoom functions itself..

[grtjn]

(or hints what I could patch locally to get round this)

[grtjn]

(sorry, wrong button.. :))

[grtjn]

Related to #41