Update AnySoftKeyboard language packs to 4.0.1396 (2908)

I made a mistake and originally pointed this MR into my own fork. Go figure.

A couple language packs use a different version in order to match APK at Play Store.

This MR was amended several times. This commit was achieved by squashing and rebasing all previous ones, and is the first to pass lint and build.

Hungarian is renamed to hungarian_oss and Dutch to dutch_oss, using afrikaans_oss as a template. Metadata files have been fixed and licence for Hungarian language pack (which is technically triple/quadruply licenced) has been retained.