[sqllab] table refactor (#2587)

* make react-virtualized table work
use dynamic sizing for cell width
enable filtering
require height prop for result set component

* fix tests and linting

* move some state to props

* move getTextWidth to visUtils

* make striped rows optional

* fix striped proptype

* update name to FilterableTable

* add basic test and fix linting

* accept array of columns keys rather than an array of objects that needs to be mapped

* move container div inside the component

* rename styles

* fit table component to width if it's smaller than parent container

* move stylesheet to javascript folder otherwise it throws an error on npm run prod

* move css to index.jsx

* fix result set spec

* fix linting and test

* fix result set props

* keep list immutable

superset/assets/spec/javascripts/components/FilterableTable/FilterableTable_spec.jsx

@@ -0,0 +1,10 @@
+import React from 'react';
+import { describe, it } from 'mocha';
+import { expect } from 'chai';
+import FilterableTable from '../../../../javascripts/components/FilterableTable/FilterableTable';
+
+describe('FilterableTable', () => {
+  it('is valid element', () => {
+    expect(React.isValidElement(<FilterableTable />)).to.equal(true);
+  });
+});