less Jet in the UI

idea/src/org/jetbrains/jet/plugin/JetFileType.java

@@ -24,12 +24,12 @@ public class JetFileType extends LanguageFileType {
 
     @NotNull
     public String getDescription() {
-        return "Jet Language";
+        return "Kotlin";
     }
 
     @NotNull
     public String getDefaultExtension() {
-        return "jet";
+        return "kt";
     }
 
     public Icon getIcon() {

idea/src/org/jetbrains/jet/plugin/run/JetRunConfigurationType.java

@@ -14,7 +14,7 @@ public class JetRunConfigurationType extends ConfigurationTypeBase {
     }
 
     public JetRunConfigurationType() {
-        super("JetRunConfigurationType", "Jet", "Jet", JetFileType.INSTANCE.getIcon());
+        super("JetRunConfigurationType", "Kotlin", "Kotlin", JetFileType.INSTANCE.getIcon());
         addFactory(new JetRunConfigurationFactory(this));
     }