Use new CI URL for Bio-Formats
Require Maven 3.0.4

We are using some plugins which require Maven 3, as reported by:

    mvn versions:display-plugin-updates

Let's be explicit about that requirement, even if those plugins are
wrapped into profiles. Maven 3.0.4 was released on 2012-Jan-20 and is
widely available for all major OSes, so it should not be an issue.
Use newest versions of various Maven plugins