Updated to MonoGame 3.6 + Directory refactor

- Barotrauma's projects are in the Barotrauma directory
- All libraries are in the Libraries directory
- MonoGame is now managed by NuGet, rather than referenced from the installed files (TODO: consider using PCL for easier cross-platform development?)
- NuGet libraries are not included in the repo, as getting the latest versions automatically should be preferred
- Removed Content/effects.mgfx as it didn't seem to be used anywhere
- Removed some references to Subsurface directory
- Renamed Launcher2 to Launcher

Barotrauma/BarotraumaShared/Source/Items/Components/Ladder.cs

@@ -0,0 +1,23 @@
+using System.Xml.Linq;
+
+namespace Barotrauma.Items.Components
+{
+    class Ladder : ItemComponent
+    {
+
+        public Ladder(Item item, XElement element)
+            : base(item, element)
+        {
+        }
+
+        public override bool Select(Character character)
+        {
+            if (character == null) return false;
+
+            character.AnimController.Anim = AnimController.Animation.Climbing;
+            //picker.SelectedConstruction = item;
+
+            return true;
+        }
+    }
+}