Remove MALDataImport since it's not used for anything
Initial cleanup of my_anime_list_import.rb
Make MyAnimeListImport#data manga-ready
Make MyAnimeListImport#apply! manga-ready and clean it up a bit
Add "notes" and "imported" columns to MangaLibraryEntry
Fix last remaining bugs in MAL List Importing

Hah, who am I kidding, this won't be the end.  There *is* no end.  Why
do I even program any more when I just keep getting beaten down by bugs?
Maybe I should become a pest control guy instead.
Delete test.
Let's try chat in production.
Lower message_bus long polling interval.