[FIXED JENKINS-23636] Indicate node the job workspace is on

* Modern browsers often don't have a full width title bar anymore, so need to add an `h1` element to the workspace browser
* Enabled localization of the workspace browser and artifacts browser titles
Quoting the job name, formatting it (e.g. italic), removing job name altogether (*Artifacts of build {1}*), separating prefix and job name by a colon, something else? What do you suggest would help here?