This copies a bunch of untranslatable page titles (such as crate
names) to the translation. I also translated a lot of small and fuzzy
entries. We should now be at 200 translated entries.
da: sync with c45b350
This is the result of running
MDBOOK_OUTPUT='{"xgettext": {"pot-file": "messages.pot"}}' mdbook build -d po
msgmerge --update po/da.po po/messages.pot
* Parse Markdown to support translation.
This upgrades from just splitting Markdown files on double-newlines, to
using a Markdown parser to break them into more appropriate chunks. The
upshot is that code samples are all in one message, lists are bundled
together, and generally it should be easier to translate.
* [WIP] helper to update po files for new translation
* process synthetic input file-by-file
* review comments
* remove temporary code
* fix msgfmt lints
