Resolve WES-181 "Missing code doc"

Assets/Common/Tests/EditMode/ThemeTests.cs

@@ -8,8 +8,16 @@ using UnityEngine;
 [TestFixture]
 public class ThemeTests
 {
+    /// <summary>
+    /// Reference to the current theme, for quick access
+    /// </summary>
     private Theme theme;
+
+    /// <summary>
+    /// The names of custom learnables for a custom theme
+    /// </summary>
     private List<string> names = new List<string>() { "appel", "peer", "banaan" };
+
     /// <summary>
     /// Setup a theme with some learnables in it
     /// </summary>
@@ -24,6 +32,7 @@ public class ThemeTests
             theme.learnables.Add(learnable);
         }
     }
+
     /// <summary>
     /// Test if all the learnables are stored in the theme
     /// </summary>