Adding "bulk" additional interactions

[vw253]

In addition to being able to add interactions to nodes one by one, it would be useful if you could "add all secondary interactors" (It gets confusing to add them one by one, sometimes you end up adding them twice)

(maybe the view here

http://www.esyn.org/dev/builder.php?type=Graph&query=SPBC11B10.09&organism=4896&interactionType=any&source=pombase

could have the 'title' displaying all primary interactors for gene x)