Add a reflash botton for CleanroomReleases#28

Ecdcaeb wants to merge 4 commits into

CleanroomMC:masterCleanroomMC/CleanroomRelauncher:masterfrom

Ecdcaeb:update_if_possibleEcdcaeb/CleanroomRelauncher:update_if_possibleCopy head branch name to clipboard