This includes:
 - installing jquery and qunit using npm instead of using
   versions checked in the repository. Modern version
   of libraries are used instead of outdated version from
   the repo.
 - tests are updated to QUnit 2 (to use async instead of
   start/stop)
 - qunit.parameterize is not compatible with qunit 2,
   therefore it was dropped. Test cases (used in a single
   test module only) are enumerate in a loop instead.
 - custom homebrew test runner is dropped
 - requirejs, only used for tests, is no longer used,
   karma config specifies dependencies for tests to run.
 - qunit tests are run as part of npm test. Bash build script
   is removed.