Add sinon as a dev dependency
Add mocha and mocha-phantomjs as dev dependencies
Add jquery as a dev dependency
Update test readme
Extend expect.js rather than modify the source
Unused extensions
Lint
Doc flip
Merge pull request #2312 from tschaub/test-deps

Move test dependencies out of the repo.
Remove transient jsdoc dependencies

alpha9 has the dependencies fixed again, so no need to keep taffydb and
underscore around.
Merge pull request #2321 from ahocevar/cleanup-package-json

Remove transient jsdoc dependencies