Consider adding better snapshots to reps

[Greg Tatum]

There are nicer formatters for snapshots available, and would help the testing assertions for reps. This takes an enzyme wrapper, and renders it as a nice DOM tree string representation. I took a quick stab at adding this with #942 but got bogged down in the upgrades.

https://www.npmjs.com/package/enzyme-to-json

We would need to upgrade Jest and Enzyme in order to get this.

[Jason Laster]

Thanks for starting this and sharing :)

[Nicolas Chevobbe]

I'll do this when reduxification of the objectInspector is over

[Nicolas Chevobbe]

doable after #966 lands