Profile elements - Simplified class hierarchy

Profile editor - Seperated event types and avoid a lot of type checking
Profile editor - Avoid changing profiles/layers if the new equals the old
Color picker - Fixed binding error
Profile tree - Select first element by default
Profile editor - Adjusted initialization order

src/Artemis.Core/Models/Profile/LayerProperties/BaseLayerProperty.cs

@@ -20,7 +20,7 @@ namespace Artemis.Core.Models.Profile.LayerProperties
         /// <summary>
         ///     Gets the profile element (such as layer or folder) this effect is applied to
         /// </summary>
-        public PropertiesProfileElement ProfileElement { get; internal set; }
+        public RenderProfileElement ProfileElement { get; internal set; }
 
         /// <summary>
         ///     The parent group of this layer property, set after construction