~ temporary removed expand menus
Implemented Virtual Root as JDK Proxy (reverse-merged from commit f02aaf2ac6223d74f16f01911dd52ed34a485c6e)
Fixed Virtual Root Proxy
Merge branch 'master' of https://github.com/wuetherich/bundlemaker.git

Conflicts:
	main/org.bundlemaker.core.ui.artifact/src/org/bundlemaker/core/ui/artifact/tree/ArtifactTreeContentProvider.java
Merge pull request #145 from nilshartmann/master

Fixed Virtual Root Proxy
~ added preferences framework
~ Preferences/Properties support
~ support for settings.xml
Allow Eclipse 3.8 (not only 3.8.1)
Clear cache when provider gets disposed. Re-read images in case they are
already disposed
Make sure boolean prefs are stored
Merge pull request #146 from nilshartmann/master

Minor fixes
Allow 'Set initial transformation script' on CompilationUnits
createNewResourceStandin: made it override-able
~ enhanced support mvn setting files
~ clean-up
~ improved error dialog
~ enhanced support mvn setting files
~ minor clean-up
~ changes