Cuckoo fixups

Add some error checking to make the service a bit more robust:

- Don't try to process a PCAP file if there was a problem fetching it from the cuckoo server.
- If running multiple analyses, don't have the entire service quit if there is an error in processing one of them.

These should not cause any change in behavior in a "normal" run, only when unexpected errors occur.

Also bump the service version so it's no longer "alpha".