Adds equals override to Trait objects.

Fixes trait comparisons.

app/src/main/java/com/majinnaibu/monstercards/models/Trait.java

@@ -1,6 +1,9 @@
 package com.majinnaibu.monstercards.models;
 
+import androidx.annotation.Nullable;
+
 import java.util.Comparator;
+import java.util.Objects;
 
 public class Trait implements Comparator<Trait>, Comparable<Trait> {
 
@@ -14,12 +17,33 @@ public class Trait implements Comparator<Trait>, Comparable<Trait> {
 
     @Override
     public int compareTo(Trait o) {
-        return this.name.compareToIgnoreCase(o.name);
+        return compare(this, o);
     }
 
     @Override
     public int compare(Trait o1, Trait o2) {
-        return o1.name.compareToIgnoreCase(o2.name);
+        int result = o1.name.compareToIgnoreCase(o2.name);
+        if (result != 0) {
+            return result;
+        }
+        return o1.description.compareToIgnoreCase(o2.description);
     }
 
+    @Override
+    public boolean equals(@Nullable @org.jetbrains.annotations.Nullable Object obj) {
+        if (obj == null) {
+            return false;
+        }
+        if (!(obj instanceof Trait)) {
+            return false;
+        }
+        Trait otherTrait = (Trait) obj;
+        if (!Objects.equals(this.name, otherTrait.name)) {
+            return false;
+        }
+        if (!Objects.equals(this.description, otherTrait.description)) {
+            return false;
+        }
+        return true;
+    }
 }