Possible risk of using git dependencies

[hasanbalci]

Newt uses forked Cytoscape.js that has a dependency to ahmetcandiroglu/canvas2svg repository. This is risky, because in the case of deletion of this repository, application won't be able to build. Instead, we can try using either cytoscape-svg extension or fork the original canvas2svg repo to iVis-at-Bilkent and make the required changes.

The same risky problem exists for the dependency path newt -> sbgnviz.js -> libsbgn.js -> royludo/rdflib.js. The above solution can be applied for this case as well.