Merge pull request #175 from rkozyak/AlexWangfinal

Update CommunityScreen.java final commit

HealthTrack/app/src/main/java/com/example/healthtrack/view/CommunityScreen.java

@@ -49,6 +49,7 @@
 import java.util.Objects;
 
 public class CommunityScreen extends AppCompatActivity implements Observer {
+    // instance variables
     private Dialog dialog;
     private Dialog dialog2;
     private Button btnDialogAdd;