Minor adjustments in UI labels

Change-Id: Ieab7794cb974e380735dd87b0b2acd2e0b23a5da
diff --git a/plugins/org.eclipse.emf.henshin.variability.configuration.ui/src/org/eclipse/emf/henshin/variability/ui/views/VariabilityView.java b/plugins/org.eclipse.emf.henshin.variability.configuration.ui/src/org/eclipse/emf/henshin/variability/ui/views/VariabilityView.java
index 75357ac..1850c8a 100644
--- a/plugins/org.eclipse.emf.henshin.variability.configuration.ui/src/org/eclipse/emf/henshin/variability/ui/views/VariabilityView.java
+++ b/plugins/org.eclipse.emf.henshin.variability.configuration.ui/src/org/eclipse/emf/henshin/variability/ui/views/VariabilityView.java
@@ -227,9 +227,9 @@
 
 				MessageDialog messageDialog = new MessageDialog(getViewSite().getShell(), "Delete features", null,
 						"Do you really want to delete the selected features?\nDoing so may render the rule's feature model invalid.",
-						MessageDialog.WARNING, new String[] { "No", "Yes" }, 0);
-
-				if (messageDialog.open() == 1) {
+						MessageDialog.WARNING, new String[] { "Yes", "No" }, 0);
+				
+				if (messageDialog.open() == 0) {
 					for (Feature feature : selectedFeatures) {
 						config.removeFeature(feature);
 					}
@@ -393,7 +393,7 @@
 
 		Label variabilityModelLabel = new Label(composite, SWT.NONE);
 		variabilityModelLabel.setImage(ImageHelper.getImage("/icons/variability.gif"));
-		variabilityModelLabel.setText("Feature Model");
+		variabilityModelLabel.setText("Configuration constraint");
 		variabilityModelLabel.setLayoutData(new GridData(SWT.FILL, SWT.LEFT, false, false, 1, 1));
 		featureModelToolbar = new ToolBar(composite, SWT.FLAT);
 		GridDataFactory.fillDefaults().align(SWT.END, SWT.CENTER).grab(true, false).applyTo(featureModelToolbar);
@@ -740,7 +740,7 @@
 		domain.addResourceSetListener(new ConfigurationListener());
 
 		viewer.setInput(config);
-		ruleNameLabel.setText("Selected Rule: " + rule.getName());
+		ruleNameLabel.setText("Selected rule: " + rule.getName());
 		writableValue.setValue(rule);
 		refreshFavorites(rule);
 
diff --git a/plugins/org.eclipse.emf.henshin.variability.mergein.ui/plugin.xml b/plugins/org.eclipse.emf.henshin.variability.mergein.ui/plugin.xml
index 4f78d5b..58db3c1 100644
--- a/plugins/org.eclipse.emf.henshin.variability.mergein.ui/plugin.xml
+++ b/plugins/org.eclipse.emf.henshin.variability.mergein.ui/plugin.xml
@@ -5,14 +5,14 @@
          point="org.eclipse.ui.views">
       <category
             id="org.eclipse.emf.henshin.variability.ui"
-            name="Clone Detection">
+            name="Henshin Variability">
       </category>
       <view
             category="org.eclipse.emf.henshin.variability.ui"
             class="org.eclipse.emf.henshin.variability.ui.views.CloneGroupView"
             icon="icons/sample.gif"
             id="org.eclipse.emf.henshin.variability.ui.views.CloneGroupView"
-            name="CloneGroupView">
+            name="Clone Groups">
       </view>
    </extension>
    <extension