Many of the demo networks are broken

[mikekucera]

Current (buggy) behaviour

Some of the demo networks on js.cytoscape.org are just blank. This error appears in the console

code.js:6 Uncaught ReferenceError: cytoscape is not defined
    at code.js:6:3
    at code.js:17:3

Minimum steps to reproduce

Go here: https://js.cytoscape.org/#demos

These are the networks that are broken: https://js.cytoscape.org/demos/colajs-graph/ https://js.cytoscape.org/demos/tokyo-railways/ https://js.cytoscape.org/demos/circle-layout/ https://js.cytoscape.org/demos/concentric-layout/ https://js.cytoscape.org/demos/grid-layout/ https://js.cytoscape.org/demos/cose-layout/ https://js.cytoscape.org/demos/images-breadthfirst-layout/ https://js.cytoscape.org/demos/animated-bfs/ https://js.cytoscape.org/demos/node-types/ https://js.cytoscape.org/demos/edge-types/ https://js.cytoscape.org/demos/radius-types/ https://js.cytoscape.org/demos/edge-arrows/ https://js.cytoscape.org/demos/labels/ https://js.cytoscape.org/demos/compound-nodes/ https://js.cytoscape.org/demos/linkout-example/

Also this one gives a 404, which is probably not releated but worth mentioning: https://ivis-at-bilkent.github.io/cytoscape.js-cise/demo.html

For reviewers

Reviewers should ensure that the following tasks are carried out for incorporated issues:

• [ ] Ensure that the reporter has included a reproducible demo. They can easily fork this JSBin demo: http://jsbin.com/fiqugiq
• [ ] The issue has been associated with a corresponding milestone.
• [ ] The commits have been incorporated into the corresponding branches. Bug-fix patches go on
  • [ ] master,
  • [ ] unstable, and
  • [ ] the previous feature release branch (e.g. 1.1.x if the current release is 1.2).
• [ ] The issue has been labelled as a bug, if necessary.

[mikekucera]

Can't reproduce this locally from the master branch. Maybe its related to #3255?

[maxkfranz]

Yes, likely related