Update survey progress bar to show on API 21 (#804)

Author: john2020star

app/src/main/res/layout/activity_user_survey.xml

@@ -78,6 +78,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:indeterminateTint="@color/white"
+            android:indeterminateTintMode="src_in"
             android:secondaryProgressTint="@color/white"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toEndOf="parent"