MP campaign additions/fixes:

- Store tab & cargo spawning
- Sub & shuttle lists and level seed box are disabled when a campaign is active.
- Campaign UI is recreated if a new campaign is started while another one is active.

Barotrauma/BarotraumaClient/Source/GUI/GUIDropDown.cs

@@ -142,7 +142,7 @@ namespace Barotrauma
 
         private bool OnClicked(GUIComponent component, object obj)
         {
-            if (wasOpened) return false;
+            if (wasOpened || !Enabled) return false;
             
             wasOpened = true;
             Dropped = !Dropped;

Barotrauma/BarotraumaClient/Source/GUI/GUIListBox.cs

@@ -80,7 +80,11 @@ namespace Barotrauma
         public bool Enabled
         {
             get { return enabled; }
-            set { enabled = value; }
+            set
+            {
+                enabled = value;
+                scrollBar.Enabled = value;
+            }
         }
 
         public override Color Color
@@ -280,7 +284,7 @@ namespace Barotrauma
 
             UpdateChildrenRect(deltaTime);
             
-            //base.Update(deltaTime);
+            if (!enabled) return;
 
             if (scrollBarEnabled && !scrollBarHidden) scrollBar.Update(deltaTime);
 

Barotrauma/BarotraumaClient/Source/GUI/GUIScrollBar.cs

@@ -36,7 +36,11 @@ namespace Barotrauma
         public bool Enabled
         {
             get { return enabled; }
-            set { enabled = value; }
+            set
+            {
+                enabled = value;
+                bar.Enabled = value;
+            }
         }
 
         public float BarScroll
@@ -161,6 +165,8 @@ namespace Barotrauma
 
             base.Update(deltaTime);
 
+            if (!enabled) return;
+
             if (MouseOn == frame)
             {
                 if (PlayerInput.LeftButtonClicked())