Extract non-native entries from Wiktionary files too

Each language's Wiktionary version can contain entries for any word in any language. We currently only extract the native ones, but making it possible to extract all entries is very useful. We have to add a setting to allow choosing which entry should be pasted to the note.

One related issue that we should think of is how to handle the case where there are multiple entries of a single word belonging to the same language (e.g. different entries for nouns and verbs). Should we dump all of them together to the same note?