don't exclude distribution module from build + some POM refactoring
this prevents that the version number isn't bumped when using
maven-release-plugin
some more POM cleanup
- use Maven reporting properly
- use jar-no-fork instead of jar for maven-sources-plugin
added a note that 'compile' has to be run before running findbugs
change cobertura output from xml to html (default) for the reports
Merge pull request #56 from neothemachine/sonatype

Further cleanup of pom files