Bug 439704

SUMMARY
When making a bundle, Krita should look at the "Name" of the resource and when putting the resource inside the bundle, it should rename its filename to be Name.suffix (with standard ' ' <-> '_').

It would ease some of the artists worries about weird resources names, probably.

Desired effect:
1) Before: "Old_Name.kpp" with Name "New_Name" -> "New_Name.kpp"
2) Before: "Name (1).kpp" with Name "Name" -> "Name.kpp"
3) Before: "Name.0001.kpp" with Name "Name" -> "Name.kpp"

Why?
1) Artists were complaining about filenames that don't match their expectations. It wouldn't be feasible to change the way we treat resources in the resource folder now, but it would be good to have pretty names inside an exported bundle.
2) It would allow PNG patterns to have correct names, I guess?
3) Names "Name (\d\d\d)" are copies of the resource, no point in repeating them, I guess.
4) It will both resolve some and cause some name-filename issues (created: like preset A renamed to B, then a preset B created, then the user wants to import both; solved: preset A renamed to B, then a preset A created, user wants to import both). I feel like nicer solution would be more desirable.

There is no danger that I see of "losing" any information because we don't care about versioning of the resource on the bundle creator's system anyway.

SOFTWARE/OS VERSIONS
git hash: 13f04ca236