User profile pages (favorites, created content, recent activity, security & access) (#1615)

* Super

* User profile page

* Fixing python style

* Python unit tests

* Touchups and js tests

* Addressing comments

superset/assets/spec/javascripts/profile/CreatedContent_spec.jsx

@@ -0,0 +1,27 @@
+import React from 'react';
+import CreatedContent from '../../../javascripts/profile/components/CreatedContent';
+import TableLoader from '../../../javascripts/profile/components/TableLoader';
+import { mount } from 'enzyme';
+import { describe, it } from 'mocha';
+import { expect } from 'chai';
+import { user } from './fixtures';
+
+
+describe('CreatedContent', () => {
+  const mockedProps = {
+    user,
+  };
+  it('is valid', () => {
+    expect(
+      React.isValidElement(<CreatedContent {...mockedProps} />)
+    ).to.equal(true);
+  });
+  it('renders 2 TableLoader', () => {
+    const wrapper = mount(<CreatedContent {...mockedProps} />);
+    expect(wrapper.find(TableLoader)).to.have.length(2);
+  });
+  it('renders 2 titles', () => {
+    const wrapper = mount(<CreatedContent {...mockedProps} />);
+    expect(wrapper.find('h3')).to.have.length(2);
+  });
+});