[F] Move signOut() to the right place

src/components/navigation/navigation.ts

@@ -27,4 +27,13 @@ export default class Navigation extends Vue
         // Call custom event
         this.$emit('navigation:select', this.activeIndex);
     }
+
+    /**
+     * This function is called when the sign out button is clicked.
+     */
+    public signOut()
+    {
+        // Call custom event
+        this.$emit('sign-out');
+    }
 }

src/pages/overall/overall.ts

@@ -148,13 +148,4 @@ export default class Overall extends Vue
 
         return result;
     }
-
-    /**
-     * This function is called when the sign out button is clicked.
-     */
-    public signOut()
-    {
-        // Call custom event
-        this.$emit('sign-out');
-    }
 }