Cleanup and some refactoring in classes in Starcounter.XSON project (and projects using Starcounter.XSON). Removed unused usings, using proper namespaces for some classes and removed code.
Moved global settings for serializer for Starcounter.XSON to static module class.
Fixed failing unittests after refactoring of Starcounter.XSON classes.
Merge branch 'xson_cleanup' into develop