MIRTH-2239: Added Velocity replacements to fields that weren't being replaced in WebServiceConnectorService.
MIRTH-2849: Added Javadocs to classes.
MIRTH-2849: Added Javadocs to classes.
MIRTH-2849: Added/modified Javadocs.
MIRTH-2849: Refactored a method in DICOMUtil to use "messageObject" instead of "message".