Allow for direct comparison of expected and request response within ReadyAPI

Rather than relying on outside tools like jsoneditoronline, having the ability to compare expected response from current response would be very beneficial.  A user must take the time to copy the expected and the current responses into jsoneditoronline to understand the differences when we have responses that are quite large. 

Add a new button to the JSONPath Match Assertion dialog to allow for direct comparison in the tool. (side by side view)