Revert "Remove unused notifications icon"

This reverts commit 44149aa3.

app/src/main/java/app/insti/MainActivity.java

@@ -186,11 +186,11 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
         int id = item.getItemId();
 
         //noinspection SimplifiableIfStatement
-        /*if (id == R.id.action_notifications) {
+        if (id == R.id.action_notifications) {
             showNotifications = true;
 //            fetchNotifications();
             return true;
-        }*/
+        }
         return super.onOptionsItemSelected(item);
     }
 

app/src/main/res/menu/main.xml

 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
-    <!--<item
+    <item
         android:id="@+id/action_notifications"
         android:icon="@drawable/ic_notifications_black_24dp"
         android:orderInCategory="1"
         android:title="Notifications"
-        app:showAsAction="always" />-->
+        app:showAsAction="always" />
 </menu>