housekeeping: reorganize and rewire Mocha tests (#5600)

* move Mocha-run tests to `test/mocha`

* fix relative paths

* fix JSX test paths

* update stagnated JSX tests

* `test/setup.js` -> `test/mocha/setup.js`

* use regex+globstar for test matching

* remove `console.log`

test/components/response-body.jsx

@@ -1,36 +0,0 @@
-import React from "react"
-import expect from "expect"
-import { shallow } from "enzyme"
-import ResponseBody from "components/response-body"
-import { inferSchema } from "corePlugins/samples/fn"
-
-describe("<ResponseBody />", function() {
-    const highlightCodeComponent = () => null
-    const components = {
-        highlightCode: highlightCodeComponent
-    }
-    const props = {
-        getComponent: c => components[c],
-    }
-
-    it("renders ResponseBody as 'application/json'", function() {
-        props.contentType = "application/json"
-        props.content = "{\"key\": \"a test value\"}"
-        const wrapper = shallow(<ResponseBody {...props}/>)
-        expect(wrapper.find("highlightCodeComponent").length).toEqual(1)
-    })
-
-    it("renders ResponseBody as 'text/html'", function() {
-        props.contentType = "application/json"
-        props.content = "<b>Result</b>"
-        const wrapper = shallow(<ResponseBody {...props}/>)
-        expect(wrapper.find("highlightCodeComponent").length).toEqual(1)
-    })
-
-    it("renders ResponseBody as 'image/svg'", function() {
-        props.contentType = "image/svg"
-        const wrapper = shallow(<ResponseBody {...props}/>)
-        console.warn(wrapper.debug())
-        expect(wrapper.find("highlightCodeComponent").length).toEqual(0)
-    })
-})