[BUNDLE INSTALL] [`rake db:test:prepare`] Start test suite.

@four04, @samercier, @btgeek you should read this.
I was working on the transition to Rails 4, and noticed when
going through the railscast that he heavily depends on tests.
I thought I might as well build a few tests into the master branch.
Turns out that we really should be developing the whole site _through_
the testing suite. Read the added file spec/requests/log_ins_spec.rb
to see how well this system works without opening a browser.
I would highly recommend watching railscast 275 "How I Test"
(http://railscasts.com/episodes/275-how-i-test?view=asciicast)
that covers all this. I would like to not only in the future develop through
tests but also write tests for all the functionality we currently have.
This would also help a _lot_ with the Rails 4 transition
and it would probably also benifit the design rewrite.

Thoughts?