FIX: change version plugin findbugs to use Maven3 (2.3.1 to 2.5.5).
UPDATE: Maven site can now be generated using Maven 3. Maven 3 is now required for building the Aozan website.
UPDATE: Update scm information with Github connection URLs for Aozan.
ADD: javadoc plugin.
ADD: link to javadoc.
UPDATE: remove link in changes.xml, not authorized with Maven 3.
FIX: Fix all Javadoc warnings.