Web configurator latest screenshots

[Alexey Kuznetsov-2]

Igniters, take a look at latest Web Configurator screenshots and provide
feedback (if any).

https://issues.apache.org/jira/secure/attachment/12740145/clusters-page-1.png
https://issues.apache.org/jira/secure/attachment/12740144/clusters-page-2.png
https://issues.apache.org/jira/secure/attachment/12740143/clusters-page-3.png

All code committed into ignite-843 branch.

See webconfig\nodejs\DEVNOTES.txt about how to deploy and run Web Config.

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Alexey Kuznetsov
GridGain Systems
www.gridgain.com