Decode Content-Disposition filename value

[hashtagnulla]

Problem

When a user tries to upload a file with non-ASCII filename, the backend throws a 500 - Internal Server Error response.

Reproduction

1. Create a file that's size is higher than the default chunk size and it's name should contain non-ASCII characters
2. Create a request that tries to upload the created file to a repository. Content-Disposition's filename value must be encoded!
3. Observe the response, which will be HTTP 500.

Solution

Content Disposition's filename part should be decoded.