Profile editor - Redesigned adding/removing timeline segments

General module - Added some basic window information to the data model
Profiles - Don't render when opacity is 0
Profile editor - Render non-selected layers in their main segment
Profile editor - Condition editor fixes

src/Artemis.Core/Constants.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Windows.Interop;
 using Artemis.Core.Plugins.Models;
 
 namespace Artemis.Core
@@ -67,7 +68,9 @@ namespace Artemis.Core
         {
             typeof(float),
             typeof(double),
-            typeof(decimal)
+            typeof(decimal) 
         };
+
+        public static IntPtr MainWindowHandle { get; internal set; }
     }
 }