This commit is related to the bug #683420.
It was declared to be the same value in all three headers, which causes problems with old version of GCC. https://bugzilla.gnome.org/show_bug.cgi?id=683696
This commit places list of jobs to separate dialog. The dialog is updated through calling of pp_jobs_dialog_update() from "Printers" panel because the panel is already subscribed to cups notifications.