1) To update .pot files: in _docs directory, where are .rst files run: sphinx-build -b gettext . _build/locale/
2) Update language .po files: msgmerge -U _translated/cs/LC_MESSAGES/file.po _build/locale/file.pot
3) Translate .po file in your favorite editor
4) Compile .po file to .mo: Go to _translate/lang_code/LC_MESSAGES and do: msgfmt file.po -o file.mo
