app manager (docker/weblate): use new `files` feature to set `settings-override.py`: This file is used to set `USE_X_FORWARDED_HOST`, which is necessary to make Weblate work correctly being an Apache (and potentially other HTTP servers) reverse proxy (otherwise we have CSRF errors, cf. https://github.com/WeblateOrg/weblate/issues/1912).

syntax: glob
*.pyc
*.pyv
*.swp
*.swo
tags
twistd.log
twistd.pid
bridge_constructor/generated
_trial_temp/
sat.egg-info
*.un~
dist
MANIFEST
build
ctags_links/
Session.vim
.build
.pytest_cache