import: link action_required below title

Set action_required top constraint to title
and added top margin for spacing.

Change-Id: I722fd48e75c472ff1825638c883d2ce76f91134c

jami-android/app/src/main/res/layout/fragment_import_side_step_2.xml

@@ -192,15 +192,15 @@
         android:id="@+id/action_required"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
         android:layout_marginBottom="16dp"
         android:lineSpacingExtra="8dp"
         android:text="@string/import_side_step2_action_required"
         android:textAlignment="center"
         android:visibility="invisible"
-        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/title"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintVertical_chainStyle="packed" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
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