files with multiple extensions lose an extension (.tar.gz -> .gz)

[Baisang]

files with multiple extensions are not served properly -- they lose an extension

example:

https://i.fluffy.cc/L6j2RJm6QR5LRLThdSQ4Ddd9X7Zv76JM.html

[Baisang]

@chriskuehl unless you're really bored, I can get around to doing this within the next week or so

[chriskuehl]

I don't really know how to solve this. How do you differentiate between what is part of an extension and what is just a dot in the filename?

[chriskuehl]

Implementing #61 might be the best approach to this (although it will only work for backends like S3).

[chriskuehl]

Good news is #61 is implemented, so this is at least partially fixed for anyone using the S3 backend -- when downloading via a browser, the file should download with the original name (including the full extension).

It still might be good to keep both extensions in the file storage name though, since that's still what will be used if you e.g. wget the file.