KT-801 Implement Naviagate -> Class... for kotlin

compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/JetLightClass.java

@@ -3,6 +3,8 @@
  */
 package org.jetbrains.jet.asJava;
 
+import com.intellij.navigation.ItemPresentation;
+import com.intellij.navigation.ItemPresentationProviders;
 import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.Comparing;
@@ -172,6 +174,11 @@ public class JetLightClass extends AbstractLightClass implements JetJavaMirrorMa
         return answer;
     }
 
+    @Override
+    public ItemPresentation getPresentation() {
+        return ItemPresentationProviders.getItemPresentation(this);
+    }
+
     @Override
     public boolean isEquivalentTo(PsiElement another) {
         return another instanceof PsiClass && Comparing.equal(((PsiClass) another).getQualifiedName(), getQualifiedName());