Cherry pick restore docs to 7.115.x.#3053

dkwon17 wants to merge 3 commits intoeclipse-che:7.115.xeclipse-che/che-docs:7.115.xfrom

dkwon17:7.115.x-backup-restoredkwon17/che-docs:7.115.x-backup-restoreCopy head branch name to clipboard