[OSJC 61-66-71] fixing where timeouts are read from

Updated to have a default timeout of 3 minutes, which can be overridden by the system configuration (/etc/openshift/express.conf), which can be overridden by the user configuration (~/.openshift/express.conf), which can be overridden by system properties (-Dexpress.timeout=<integer>).  Also wrote associated tests to test overriding, and added a couple of more "fakes" that were needed for the tests.