This is a demonstration of chai-http for server-side testing. Test setup: in
a separate terminal window, launch 'node app'. Then in [approot]/server, run
'npm test'. This automatically runs the test script specified in package.json

* Add chai and chai-http as dependencies
* Remove nodeunit and commander as dependencies
* Specify the test script. Note that on Windows, running 'npm test' will not
  work. Windows developers can run the test manually.
* Remove old tests.
* All tests in the "test" folder will be executed. I have included a sample for
  the login page.

When the installer is run, only the site module should be installed.
In the previous version of the code, we were manipulating items in the
array as it was being traversed (!). This version creates resultsCopy
to hold the result of our desired manipulation.

This way, the test will automatically start its own server and
run the tests against that.

I've added a before() function, which is unimplemented. Right now
the first test is very slow, because the server is not fully started.
If we can wait for this in the before function, then that test's
timing would be reported more accurately.

Remove this file so that it does not conflict with developers' existing
configuration.

* Add app.$siteOnline as a jQuery deferred. The deferred is resolved
when the app is fully started and listening on the designated port.
* Modules that load app.js can examine app.$siteOnline to see if the site
is online.
* Update before hook of site_login_test_mocha to wait until the application is
started before running tests.