Enable the generic start screen and adjust its graphics to show a basic engine logo with a progress bar

src/common/startscreen/startscreen.cpp

@@ -367,7 +367,7 @@ FStartScreen* GetGameStartScreen(int max_progress)
 			Printf("Error creating start screen: %s\n", err.what());
 			// fall through to the generic startup screen
 		}
-		//return CreateGenericStartScreen(max_progress);
+		return CreateGenericStartScreen(max_progress);
 	}
 	return nullptr;
 }