Refactored shape brushes to use the properties system

src/Artemis.Storage/Entities/Profile/LayerEntity.cs

@@ -23,8 +23,6 @@ namespace Artemis.Storage.Entities.Profile
         public List<PropertyEntity> PropertyEntities { get; set; }
         public List<ProfileConditionEntity> Condition { get; set; }
 
-        public BrushEntity BrushEntity { get; set; }
-
         [BsonRef("ProfileEntity")]
         public ProfileEntity Profile { get; set; }