Little cleanup.

Author: bladecoder

blade-engine/src/com/bladecoder/engine/model/TextRenderer.java

@@ -304,7 +304,8 @@ public void loadAssets() {
 		params.fontParameters.magFilter = TextureFilter.Linear;
 		params.fontParameters.minFilter = TextureFilter.Linear;
 
-		EngineAssetManager.getInstance().load(fontName + getFontSize() + ".ttf", BitmapFont.class, params);
+		EngineAssetManager.getInstance().load(fontName + getFontSize() + EngineAssetManager.FONT_EXT, BitmapFont.class,
+				params);
 	}
 
 	@Override

blade-engine/src/com/bladecoder/engine/ui/MenuScreen.java

@@ -151,9 +151,11 @@ public void show() {
 		menuButtonTable.addListener(new InputListener() {
 			@Override
 			public boolean keyUp(InputEvent event, int keycode) {
-				if (keycode == Input.Keys.ESCAPE || keycode == Input.Keys.BACK)
+				if (keycode == Input.Keys.ESCAPE)
 					if (world.getCurrentScene() != null)
 						ui.setCurrentScreen(Screens.SCENE_SCREEN);
+					else if (keycode == Input.Keys.BACK)
+						Gdx.app.exit();
 
 				return true;
 			}