Emacs package updates

Now featuring @aszlig's modinst_arg_list_too_long patch.

This reverts commit 43bedb97.

Fixes #19213

Removals:
 - mmm-jinja2: repository is gone
 - salt-mode: repository is gone
 - session: removed from melpa
 - shimbun: repository server doesn't respond properly
 - w3m: repository server doesn't respond properly
 - yatex: server using insecure tls version

Removals:
 - ssh-config-mode: version number no longer parseable by package.el
 - yatex: server using insecure tls version

nix-optimise.service: nix.optimise.dates should be list

loudmouth: 1.4.3 -> 1.5.3, switch to mcabber version as the upstream as the Gnome version has stagnated

I pick the change from this pull request:
https://github.com/cryptodotis/irssi-otr/pull/60/

lsof: add one more mirror, the second one seems unavailable (and the original site is too picky about NATs)

This reverts commit e4958d54.

systemd: add user target support

jsbeautifier: init 1.6.4

See 0804f670.

pythonPackages.ansible2: 2.1.1.0 -> 2.1.2.0

r10k: remove unused docker dependency

* change git url to new official repo
* add sample configuration to package
* use licenses.beerware
* add maintainer

nixos.acme: make timer persistent

Add Rambox and Franz messengers

This makes sure that if the system was powered off when the timer was
supposed to trigger, it will run the next time the system boots up.

rustc: fix build on darwin