Implement basic signs course

Assets/Common/Interfaces/Course.cs

@@ -20,6 +20,7 @@ public class Course : ScriptableObject
     /// <summary>
     /// A short description of the course
     /// </summary>
+    [TextArea]
     public string description;
 
     /// <summary>

Assets/Common/Interfaces/Minigame.cs

@@ -19,6 +19,7 @@ public class Minigame : ScriptableObject
     /// <summary>
     /// A short description of the minigame
     /// </summary>
+    [TextArea]
     public string description;
 
     /// <summary>

Assets/Common/Interfaces/ModelIndex.cs

@@ -1,6 +1,3 @@
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine;
 /// <summary>
 /// This enum is used to identify each of the SignLanguage models
 /// </summary>
@@ -8,5 +5,5 @@ public enum ModelIndex
 {
     NONE,
     FINGERSPELLING,
-    BASICSIGNS
+    BASIC_SIGNS
 }

Assets/Common/Interfaces/Theme.cs

@@ -15,6 +15,7 @@ public class Theme : ScriptableObject
     /// <summary>
     /// A short description of the theme
     /// </summary>
+    [TextArea]
     public string description;
 
     /// <summary>