Add some todo lines for adding and removing users

src/freedombone-app-akaunting

src/freedombone-app-babybuddy

src/freedombone-app-bludit

src/freedombone-app-friendica

src/freedombone-app-hubzilla

src/freedombone-app-kanboard

src/freedombone-app-koel

src/freedombone-app-lychee

src/freedombone-app-mailpile

src/freedombone-app-microblogpub

src/freedombone-app-movim

src/freedombone-app-peertube

src/freedombone-app-pixelfed

src/freedombone-app-rocketchat

src/freedombone-app-rss

src/freedombone-app-rsync

src/freedombone-app-scuttlebot

src/freedombone-app-smolrss

src/freedombone-app-turtl

src/freedombone-app-zap