Fixed CSV Plot Editor independent series

Addressed a bug which caused the CSV Plot to ignore changes to the
independent series, as only the proxy plot was having its independent
series changed.
Signed-off-by: Robert Smith <SmithRW@ornl.gov>

org.eclipse.ice.viz.service/src/org/eclipse/ice/viz/service/csv/CSVProxyPlot.java

@@ -242,7 +242,12 @@ public class CSVProxyPlot extends ProxyPlot implements IPlotListener {
 	 */
 	@Override
 	public void setIndependentSeries(ISeries series) {
+		
+		//Set own independent series as well as the source plot's
 		super.setIndependentSeries(series);
+		getSource().setIndependentSeries(series);
+		
+		//Create a proxy for the independent series and reload
 		independentProxy = createProxySeries(series);
 		loaded = false;
 		getSource().redraw();