Fixes #9393

Fixes #9386

Fixes #9385

Many messengers dont show the status anymore, its not evident to new
users that most of their roster is hidden per default and they have to
show it to access the contacts

- Dont load plugins without short_name
- Check with the short_name if a plugin is already loaded

- Fix wrong chatstates issued because of textview changed signal
- Fix chatstates in PMs

André authored 6 years ago and Philipp Hörist committed 6 years ago

and switch to yaml format to improve readability

- Dont install _() globally, although its elegant mypy cant deal with it
- If gettext cant find the translation itself, iter through all dirs and search for it

- Prepare for removing the global installed _() method in builtins
- Sort some imports along the way