2017-05-17 Fred Gleason <fredg@paravelsystems.com>

* Added an 'RDSystem::xml()' method in 'lib/rdsystem.cpp' and
	'lib/rdsystem.h'.
	* Added a 'ListSystemSettings' web API call.

web/rdxport/rdxport.cpp

@@ -266,6 +266,10 @@ Xport::Xport(QObject *parent)
     ListServices();
     break;
 
+  case RDXPORT_COMMAND_LISTSYSTEMSETTINGS:
+    ListSystemSettings();
+    break;
+
   case RDXPORT_COMMAND_REHASH:
     Rehash();
     break;