Data model - Improved encapsulation

Conditions - Renamed from DisplayConditions to DataModelConditions to better match their nature
Core - More documentation

src/Artemis.Core/Plugins/LayerEffects/LayerEffect.cs

@@ -1,8 +1,11 @@
 using System;
-using Artemis.Core.Services;
 
 namespace Artemis.Core.LayerEffects
 {
+    /// <summary>
+    ///     Represents an effect that applies preprocessing and/or postprocessing to a layer
+    /// </summary>
+    /// <typeparam name="T"></typeparam>
     public abstract class LayerEffect<T> : BaseLayerEffect where T : LayerPropertyGroup
     {
         private T _properties;