This helps fix issues that make tooltip tests sometimes fail when run against
jQuery 3.2 or newer due to timing differences.
Details:
* Add the `moduleAfterEach` function ensuring no timers are running.
* Attach this function via `common.testWidget`.
* Attach this function to most test suites.
* Add a tooltip test helper cleaning up leftover timers.
* Rename legacy `setup`/`teardown` hooks to `beforeEach`/`afterEach`.
Closes gh-1920
Ref #10119
Ref gh-1528
* Adds RequireJS and relies on AMD for loading dependencies.
* Updates to grunt-contrib-qunit 0.6.0.
* Convert `domEqual()` to a proper QUnit assertion.
* Introduces two bootstrap files (JS and CSS) which use `data-` attributes to
reduce the amount of boilerplate needed in each test