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/Conditions/Abstract/DisplayConditionPart.cs

@@ -32,5 +32,7 @@ namespace Artemis.Core.Models.Profile.Conditions.Abstract
                 _children.Remove(displayConditionPart);
             }
         }
+
+        public abstract void ApplyToEntity();
     }
 }

src/Artemis.Core/Models/Profile/Conditions/DisplayConditionGroup.cs

@@ -5,6 +5,12 @@ namespace Artemis.Core.Models.Profile.Conditions
     public class DisplayConditionGroup : DisplayConditionPart
     {
         public BooleanOperator BooleanOperator { get; set; }
+
+        public override void ApplyToEntity()
+        {
+            foreach (var child in Children)
+                child.ApplyToEntity();
+        }
     }
 
     public enum BooleanOperator