Ability to edit YTYP files and MLO Entity Defintions + Revisions to grass brush (#33)

* - Add ability to edit/add ytyp files to project.
- Add ability to edit/add ytyp archetype files to ytyp.
- Add ability to add/remove entities from mlo archetype defs.
- Add ability to save ytyp files.
- Add dialog popup before optimizing grass batches.
- Fix grass batches not being selected when chaning selection in project explorer.
- Merged with upstream/master.
- Squashed last 4 commits for PR cleanliness.

* Fixed windows forms reference error.

* - Added error checking to deleting mlo entities.
- Fixed various bugs with deleting mlo entities.
- Fixed edit archetype panel Asset Type box.
- Removed redundant/unnecessary.
- Removed backwards references between MCEntityDef and YmapEntityDef. All ymap entity to mcentity references are grabbed using indecies in the MloInstanceData class.
- Fixed "YmapMenu" not showing when selecting entities/mlo entities in project form.

Current bugs:
- Loading a ytyp file -- mlo entities are not editiable, and are created in the world.
- entitysets are not editable (properly).
- Removing an mloinstancedef from a ymap does not delete the mlo instance's gizmo from the world, and it's still selectable. (Although all references are lost, and I believe collected by the GC?)

* - Moved archetype initialization methods YmapFile.InitYmapEntityArchetypes(GameFileCache gfc)  and MloInstanceData.InitYmapEntityArchetypes(GameFileCache gfc)
- Added ability to load mlo instance defs through ymap files.
- Fixed add method for mlo archetypes.

* - Removed SetOrientationInv.
- Removed unreachable code + updated comment.
- Renamed CreateEntity to CreateYmapEntity, and renamed params for consistency.

* Split calls to CreateYmapEntity() and MloArchetype.AddEntity().

* Fixed redundant rotation inversions.

* - Added ability to select rooms.
- Changed tree view grouping for mlo entities.
- Fixed projectexplorer selection bugs.
- Added ability to toggle mlo entity sets.
- Fixed some change events when editing archetypes.

Utils/MapUtils.cs

@@ -182,6 +182,7 @@ namespace CodeWalker
         public YmapGrassInstanceBatch GrassBatch { get; set; }
         public YmapDistantLODLights DistantLodLights { get; set; }
         public YmapEntityDef MloEntityDef { get; set; }
+        public MCMloRoomDef MloRoomDef { get; set; }
         public WaterQuad WaterQuad { get; set; }
         public Bounds CollisionBounds { get; set; }
         public YnvPoly NavPoly { get; set; }
@@ -227,7 +228,8 @@ namespace CodeWalker
                     (DistantLodLights != null) ||
                     (MloEntityDef != null) ||
                     (ScenarioNode != null) ||
-                    (Audio != null);
+                    (Audio != null) ||
+                    (MloRoomDef != null);
             }
         }
 
@@ -257,7 +259,8 @@ namespace CodeWalker
                 || (PathNode != mhit.PathNode)
                 || (TrainTrackNode != mhit.TrainTrackNode)
                 || (ScenarioNode != mhit.ScenarioNode)
-                || (Audio != mhit.Audio);
+                || (Audio != mhit.Audio)
+                || (MloRoomDef != mhit.MloRoomDef);
         }
         public bool CheckForChanges()
         {
@@ -280,7 +283,8 @@ namespace CodeWalker
                 || (PathLink != null)
                 || (TrainTrackNode != null)
                 || (ScenarioNode != null)
-                || (Audio != null);
+                || (Audio != null)
+                || (MloRoomDef != null);
         }
 
 
@@ -386,6 +390,10 @@ namespace CodeWalker
             {
                 name = Audio.ShortTypeName + " " + Audio.GetNameString();// FloatUtil.GetVector3String(Audio.InnerPos);
             }
+            if (MloRoomDef != null)
+            {
+                name = "MloRoomDef " + MloRoomDef.RoomName;
+            }
             return name;
         }
 
@@ -460,6 +468,10 @@ namespace CodeWalker
             {
                 name = Audio.ShortTypeName + " " + Audio.GetNameString();//  + FloatUtil.GetVector3String(Audio.InnerPos);
             }
+            if (MloRoomDef != null)
+            {
+                name = "MloRoomDef " + MloRoomDef.RoomName;
+            }
             return name;
         }