Added ToJSON() method for retreiving a JSON string of the Any content.
Fixed warning regarding comparison of unequal types
Added warning about possible error causes
Improved Any::ToString() and ToJSON() methods and added a unit test.
Merge branch '12-json-formatting-of-any' into development

* 12-json-formatting-of-any:
  Improved Any::ToString() and ToJSON() methods and added a unit test.
  Added ToJSON() method for retreiving a JSON string of the Any content.