Switchover maven build

This set of changes removed the dependency on the archive.org artifact repository. This means minor changes to a number of dependency versions, and in some cases meant coping with the fact that classes had moved between versions. It also renames the contained artifacts to be under the org.netpreserve name rather than archive.org. Finally, it also adds a travis YAML file, and should build cleanly.

See also https://github.com/iipc/archive-commons/pull/2