Git commits in Moodle 3.2.x by David Ligne

commit f2510387e5a1945b5faff66629ccfdf384013d0c
Author: David Ligne <david.ligne@umontreal.ca>
Date:   Fri, 14 Oct 2016 02:50:07 +0800
Tag:    v3.2.0-beta

MDL-56442 administration: Display hours in maintenance mode messages