No lower case mapping for "Ø" in charset non_cjk

[jnystad]

Describe the bug
Ø (00D8) is included but not mapped in non_cjk charset. For consistency, this should be mapped to "o" (006F), the same way "ø" (00F8) is.

As a Scandinavian, I would also suggest you consider defaulting to handling ø, ö, ä and å as distinct from their seemingly similar siblings. I understand this may be an exception you don't really want, as I'm sure more languages have similar issues that may be in conflict with each other. However, æ is already treated as a distinct character, so it seems a little inconsistent.

Treating Ø as distinct from ø, however, seems like a clear bug to me.

To Reproduce
Steps to reproduce the behavior:

1. Index some text containing words with Ø
2. Try to search with ø or o

Expected behavior
Ø and ø should be treated the same.

[Nick-S-2018]

We fixed it in 8ed0f51

Regarding 'æ' as being handled differently from the other symbols mentioned above, it is a ligature symbol, while the other ones are diacritic so they have unambiguous 'base' symbols they can be naturally mapped to.

[jnystad]

Thanks!