- fixed Submarine.MainSub not being set in tutorialmode

- controllers can effect view distance (-> longer railgun view dist)
- fixed removeitem messages not being sent when a fabricator destroys an item
- changes to depth damage logic: structures won't take damage until the pressure is above the health of the hull (i.e. weaker structures break first, subs with no windows can go deeper)

Subsurface/Source/GameSession/GameModes/Tutorials/TutorialMode.cs

@@ -9,9 +9,8 @@ namespace Barotrauma
         
         public static void StartTutorial(TutorialType tutorialType)
         {
-            Submarine.Load("Content/Map/TutorialSub.sub", "", true);
-
-
+            Submarine.MainSub = Submarine.Load("Content/Map/TutorialSub.sub", "", true);
+            
             tutorialType.Initialize();
         }