Merge branch 'feature/mongo_2.6.5_expressions' into feature/mongo_2.6.5_documentSource_Project
EAGLESIX-3080: partial port of the test cases
Merge branch 'feature/mongo_2.6.5_documentSource_Project' into feature/mongo_2.6.5_documentSource_SortDocumentSource
EAGLESIX-3083: Fixed up klasses