Revert "Make mocha use `test/mocha.opts` to DRY up options used by `npm test` and `test/runall.sh` and support coffee. Add coffee-script as devDependency to package.json"

This reverts commit 9dfbffa4b8e499c5493bd8d573135cc415e8c0d6.

Conflicts:

	test/mocha.opts
Revert "Ported declarative path tests to mocha"

This reverts commit abe4f1ba03f98b331fbe2a3928bd8a2adc41a6a3.