title: What does "Jenkins URL" means in configuration settings?
body: <p>On Jenkins configuration page in section "Jenkins URL" I've set this option to "<a href="http://name_of_my_machine.jenkins:8080/" rel="noreferrer">http://name_of_my_machine.jenkins:8080/</a>"
  Usually I open jenkins by: "<a href="http://localhost:8080/" rel="noreferrer">http://localhost:8080/</a>"
  But this new option did not work for me - Jenkins does not open. So what does it mean?</p>