Issue #6: Install Apache webserver to get tests running fully.

It looks like 99% of our test failures right now come from the fact that Travis CI doesn't have a web server installed(!) You have to install one manually and then point at PHP-FPM. Unfortunately PHP-FPM doesn't have any service manager associated with it, so you have to call it directly instead of using ``service`` or ``/etc/init.d``. But hey, working tests are working tests. :)