Mine is still there you can add additional toolbars, mine is across the bottom with the weather across it . Not sure how long I can go with this working I'm on 53.2 Please just change it back
Sorry, but I can not do it - these are the inevitable changes in Firefox All Xul-addons is die in Firefox 57 (November 2017) https://blog.mozilla.org/addons/2017/02/16/the-road-to-firefox-57-compatibility-milestones/
