Expose check configuration in UI

[pete0emerson]

If #623 is accepted, then exposing check configuration (script, HTTP, Interval, TTL) in the UI is the next logical step.

Use case: I'm planning on replacing Nagios with Consul, and when checks fail I want to be able to trace them back to the source and run the checks manually.

[Blatwurst]

+1 - would be great for debugging misbehaving checks

[slackpad]

Hey there,

We are currently hiring for a full time position to manage the Consul UI. They are going to do a full revamp, so we'll make sure this is included then (and if #623 is accepted).