“teckids up” = “git pull --rebase”, plus it uses the ssh wrapper

this commit was made by “teckids ci”

might still fail if an “outer” script has offline=1 but an
inner script doesn’t, but that’s not m̲y̲ problem :þ

(not yet excluding owners; not yet excluding people who
were already listed)

(except, it also lists Orga, not just participants)