Wrote first end-to-end test (successful login should redirect to /quizzes).

Launch by running protractor protractor-conf.js

Notes:

- Currently using Jasmine (default for Protractor), but for consistency with the unit tests, I think I might prefer to try Mocha instead, as described here: https://github.com/angular/protractor/blob/master/docs/using-mocha.md

- Changed the specs file pattern to look for tests in any file ending in *.spec.js. The previous pattern wasn't very intuitive.

- Removed process.exit() from the onPrepare script; that was a bad idea.

- Not sure why exactly ptor.ignoreSynchronization = true is required, but without it, I'm getting "Error while waiting for Protractor to sync with the page".