JENKINS-21773: Removed one level of ../ in the Up link to fix matrix job Up links.

(cherry picked from commit e1ecb6beb17a8f20a5e0432d70796fbabee2a510)
JENKINS-21773: Fixed sidepanel Up link for multiaxis jobs.

(cherry picked from commit 432d07bfdb97c5707a3a3a4a19f72cbc3b8e24c8)