Adding a note about restrictions on subnets that apply to ELB and RDS, slightly more nuanced than "just check all the boxes". See http://discourse.metabase.com/t/cannot-setup-on-aws-in-vpc/2166 for more detail.

Fixed a typo or two, moved one sentence, and replaced "timezone" with "time zone" throughout to match the rest of the file.

* Ask from user before quitting when using test-integrated-watch

* Add helpful logging to the runner script, refactor file hierarchy

* Add a way to dispatch browser events in tests

* Update test command names and rewrite the frontend testing docs

* Fix test failures