changed json serializers for backwards compat

in our project; see SJL comments in these files, these are the only
changes to customize for use on Mono for Android, Mono Touch and
CDHIS.web.inspector projects
Changes to support mixed SJLGuidOverride true/false

as released to live webserver April 23, 2014. changes are in Horizon
Mobile Android and it is pending a release after testing.