Do not define DummyGeneratedVersion inside VS
Changed names used by the configuration variants.
Added missing {AssemblyName}.Version.props.
Enforce settings for Code Contracts Reference Assembly
Bugfix: Building test and sample projects raised a warning for an unknown semantic version
Replaced all initial targets in project props by a before build target
Renamed DocuMaker to Prose
Cleaned up Make.CustomAfter.props and Make.CustomAfter.targets