[WiP] rename project from Caravel to Superset (#1576)

* Change in files

* Renamin files and folders

* cleaning up a single piece of lint

* Removing boat picture from docs

* add superset word mark

* Update rename note in docs

* Fixing images

* Pinning datatables

* Fixing issues with mapbox-gl

* Forgot to rename one file

* Linting

* v0.13.0

* adding pyyaml to dev-reqs

superset/assets/spec/javascripts/sqllab/App_spec.jsx

@@ -0,0 +1,11 @@
+import React from 'react';
+import App from '../../../javascripts/SqlLab/components/App';
+import { describe, it } from 'mocha';
+import { expect } from 'chai';
+
+
+describe('App', () => {
+  it('is valid', () => {
+    expect(React.isValidElement(<App />)).to.equal(true);
+  });
+});