Merge pull request #161 from nilshartmann/master

Refresh Eclipse Workspace after building p2 artifacts
~ removed unused classes
~ fixed 'private static void toString(IBundleMakerArtifact artifact, StringBuilder builder, int offset)'
~ removed System.out
- removed "filter empty packages"
~ clean-up / refactoring
~ migrated several tests
~ fixed erroneous merge result
~ integrated all tests
~ clean-up itest
access cached parent via getter (in order to make lazy initializing work
correctly)
Details Label
Choose Expand Strategy in Toolbar