* ui: Discovery-Chain: Cope with redirects that have failovers
We found a few stranger configurations for discovery-chain, one of which
was redirects that can then failover.
We altered the parsing here to include 2 passes, one to organize the
nodes into resolvers and children/subsets based on the nodes themselves, which
includes adding the failovers to resolvers and subsets.
We then do a second pass which can more reliably figure out whether a
target is a redirect or a failover (target failovers don't have a
corresponding node), this then adds the redirect children to the already
exising resolver (from the first pass) and then checks if the redirect
also has failovers and adds those if so.
* ui: Check to see if we have a user configured default route or not
...if we don't add one so the visualization looks complete
* Reorganize resolvers so its clearer what's happening
* Use entire route definition for id
* Clean up a tiny bit more, use guid for ids instead of JSON
* ui: Externalize disco-chain utils and add initial unit testing
* Add some click outside-ness for de-highlighting things
John Cowen