first unit test and integration test

A quick test that the homepage works and that the login succeeds in three cases (failure, unconfirmed, and success).
Yeah. Just because the login info is wrong doesn't mean the HTTP request failed. This would be a good point of discussion though for how we move forward. Devise may not provide a class to anchor to, but we should discuss/research a way to anchor our tests to elements that are the least likely to change.