Issue 438 2

I renamed the `Generic Java Crawler` to the name I found here :http://www.highdots.com/forums/alt-html/meaning-referrer-user-agent-java-194571.html.

The rule `*java*` I moved to the general Crawlers.

I removed the `hhvm-nightly` from the travis tests, because they are failing with a timeout caused by update issues in the box.