Make dependencies in test build.gradle resolvable (GradlePackagingTest
runs now fine)
Fix build.gradle from tests and add info about bug in SourceUtil
Add maven-impl dependency
Add GradleDependencyConfiguration.toMavenScope() and .fromMavenScope()
Improve GradleDependencyFacetTest
Update GradleMetadataFacet and test
Fix GradleMetadataFacet.removeDirectProperty()
Fix GradleDependencyFacetTest