Small change to popup help content
Added minZoom and maxZoom parameters
(initially set to 0.1x and 10x respectively)
Switched to using cytoscape JS recommended event binding style for solving mousdown problem over instances.
Check: https://github.com/cytoscape/cytoscape.js/issues/311
Updated Cytoscape JS libs to 2.0.2 (from 2.0.1)
Added a side list showing primary instances corresponding to the node clicked.
Clicking an instance in this side list highlights failover edge.
Added highlighting to currently selected instance list element.
Help content updated
Now activate help at a click or by pressing 'h'
Changed color scheme for instance list panel