Selecting stairs based on WorldRect in editor, disable input if window not active, disable traveling if no locations are selected

Subsurface/Source/Screens/GameScreen.cs

@@ -202,7 +202,7 @@ namespace Barotrauma
 
             GUI.Draw((float)deltaTime, spriteBatch, cam);
                         
-            if (PlayerInput.GetMouseState.LeftButton != ButtonState.Pressed) Inventory.draggingItem = null;
+            if (!PlayerInput.LeftButtonDown()) Inventory.draggingItem = null;
 
             spriteBatch.End();
         }

Subsurface/Source/Screens/LobbyScreen.cs

@@ -525,6 +525,8 @@ namespace Barotrauma
 
         private bool StartShift(GUIButton button, object selection)
         {
+            if (GameMain.GameSession.Map.SelectedConnection == null) return false;
+
             GameMain.ShowLoading(ShiftLoading());
 
             //GameMain.GameSession.StartShift(selectedLevel, false);