Quote filenames as per RFC2616 (http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.5.1), this prevents filename truncation on Firefox for files with spaces within the names (part of #2566).
Quote filenames as per RFC2616 (http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.5.1), this prevents filename truncation on Firefox for files with spaces within the names (part of #2566).