Update TravisCI config; resolves #82.
Update TravisCI config; resolves #82.

- Test Oracle Java 8
- Test OpenJDK Java 8
- Use trusty
- Require sudo for OpenJDK7
- Remove Oracle Java 7 (it's gone!)
- Remove mvn site from the build process since there is no javadoc site
(at least that I can tell)

iipc/webarchive-commons,iipc/webarchive-commons