* extension.xml: Added org.sourcepit.common.maven to exportedPackages
* pom.xml: osgify-maven-plugin 0.11.0
Bug #130: ClassCastException when using b2-maven-dependencies-site-generator in more than one module in a multi module build

Merge branch 'pu/130-ClassCastEx_with_b2-maven-dependencies-site-generator'
Fixed: Artifactless dependency nodes when a node is shadowed by a node with scope test
Bug #131: Fix for missing module properties: B2ModelProcessor must overrule defaultModelProcessor in plexus container