Info Select & Rendering responses JSON

[joguSD]

Implements an Info Select interaction that will show the full JSON body of whatever option you're currently selecting in a similar fashion to the docs pane. I held off on adding this because I was unsure about how to safely render the responses as JSON because the json.dump method couldn't handle datetime objects. It seems the CLI also had this issue and implemented a json_encoder util method to handle it. I've refactored the wizards to use this in all places where something is being rendered as JSON.

@JordonPhillips @kyleknap @jamesls

[JordonPhillips]

function names should be actions, so format_json

[JordonPhillips]

Simple though this one-line function is, it should still have a test.

[joguSD]

It was being implicitly tested through one of the Environment's unit tests, but I agree an explicit test for this too makes sense.

[JordonPhillips]

Other than that one test,
⛵

[JordonPhillips]

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