… .app.src, updated start/stop
…en running the QC tests.
…n doesn't generate 500s in unexpected cases.
Note that inbound ETag values should already be escaped by the usage of unquote_header.
the skip is conditional, because it looks like some clients send a badly-formed last-chunk that has an empty chunk size, instead of a '0' chunk size it's also conditional to handle the clients that do not end their (also badly-formed) chunks with \r\n