[Ubuntu 17.10 - GNOME 3.26] | How to enable/disable hot corners in Shell

these are downstream Ubuntu patches

See bug report
https://bugzilla.gnome.org/688320


G+ reference
https://plus.google.com/+WorldofGnomeOrg/posts/BuZvPWF5ZeB

Music
Karmina - All The King's Horses