This commit adds support for remote Content-Disposition headers giving information on attachment filenames, as well as providing this information when serving locally stored files. It also passes on any filename metadata to the object storage provider, if configured as the storage backend.
This commit fixes various bugs related to the object storage migrator.
- Files with a content length of zero bytes can now be migrated
- Deduplicated files now migrate correctly
- The database query no longer skips over files
