CRM-11948 - Apply patch for running with a remote Selenium server. (This isn't currently/strictly needed for CRM-11948 but was previously written for it -- and it's come up in other contexts.)

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* CRM-11948: Run WebTests under Jenkins
  http://issues.civicrm.org/jira/browse/CRM-11948
Merge pull request #501 from totten/selenium-remote

CRM-11948 - Apply patch for running with a remote Selenium server.