documentation, json, RequestContext, ddl

Updated all REST Web Service documentation to accurately reflect recent
changes/removes and the addition of the ResponseObjects in previous
commit.  Copied classes found on Jira page for Mule after deprecation of
RequestContext for attempted workaround (unsuccessful, committed for
potential future use).  Edited GenericResponseObject's constructor to
immediately uuencode byte array representation of XML data for JSON
transport. Updated caddata table ddl in Lifeline database.