DefaultMutableModuleItem: preserve the validater

Otherwise, the module item will "forget" the validater of its parent.
This causes DynamicCommand, for example, to ignore validater methods.

This commit is dedicated to Richard Domander.

Author: ctrueden

src/main/java/org/scijava/module/DefaultMutableModuleItem.java

@@ -92,6 +92,7 @@ public DefaultMutableModuleItem(final ModuleInfo info, final String name,
 		persisted = super.isPersisted();
 		persistKey = super.getPersistKey();
 		initializer = super.getInitializer();
+		validater = super.getValidater();
 		callback = super.getCallback();
 		widgetStyle = super.getWidgetStyle();
 		minimumValue = super.getMinimumValue();
@@ -118,6 +119,7 @@ public DefaultMutableModuleItem(final ModuleInfo info,
 		persisted = item.isPersisted();
 		persistKey = item.getPersistKey();
 		initializer = item.getInitializer();
+		validater = item.getValidater();
 		callback = item.getCallback();
 		widgetStyle = item.getWidgetStyle();
 		minimumValue = item.getMinimumValue();