[kemonoparty] Fix file download URLs

[ghost]

File paths now need to be prepended with /data. Sorry for the sudden breaking change.

[mikf]

Should all file URLs start with /data/, including inline images (1) and files with full URL in path (2), or are there exceptions for certain types or services?

(1) https://kemono.party/fanbox/user/7356311/post/802343
contains one inline image.

https://kemono.party/inline/fanbox/uaozO4Yga6ydkGIJFAQDixfE.jpeg currently loads fine,
https://kemono.party/data/inline/fanbox/uaozO4Yga6ydkGIJFAQDixfE.jpeg times out. - nvm, not anymore. this now also works

(2) https://kemono.party/gumroad/user/trylsc/post/IURjT

full URLs to https://kemono.party/files/gumroad/trylsc/IURjT/reward8.jpg and https://kemono.party/attachments/gumroad/trylsc/IURjT/$3.zip in JSON data. Both are without /data/ and both work.

https://kemono.party/data/files/gumroad/trylsc/IURjT/reward8.jpg and
https://kemono.party/data/attachments/gumroad/trylsc/IURjT/$3.zip time out.

[mikf]

You shouldn't remove that line

[mikf]

URLs starting with a / don't also contain or start with https://kemono.party.

I'd rather add another check and handle this there

Suggested change

	url = self.root + '/data' + url.replace(self.root, '')
	url = self.root + "/data" + url
	elif url.startswith("https://kemono.party"):
	url = self.root + "/data" + url[20:]