Noise brush - Greatly improved performance on large layouts

Profiles core - Pass real delta time brushes/effects
Profiles core - Allow main segment to be disabled on layers
General module - Removed test data model
General module - Removed expensive open window scan, was fun to try :P
Profile editor - Refactored segments
Profile editor - Updated segment visuals to scale well when really narrow

src/Artemis.Core/Models/Profile/RenderProfileElement.cs

@@ -17,8 +17,7 @@ namespace Artemis.Core.Models.Profile
     {
         protected void ApplyRenderElementDefaults()
         {
-            if (MainSegmentLength <= TimeSpan.Zero)
-                MainSegmentLength = TimeSpan.FromSeconds(5);
+            MainSegmentLength = TimeSpan.FromSeconds(5);
         }
 
         protected void ApplyRenderElementEntity()