regrading produces warnings

[Jordi Pujol-Ahulló]

In our production system, we face this kind of output on the CLI for any single activity that appears blocked on the gradebook:

<div id="notice" class="box py-3 generalbox"><p>Aquesta activitat està blocada en el butlletí de qualificacions. Els canvis que es facin en les qualificacions d'aquesta activitat no es copiaran al butlletí de qualificacions fins que es desbloqui.</p><div class="buttons"><div class="singlebutton">
    <form method="post" action="&amp;amp;confirm_regrade=1" >
            <input type="hidden" name="sesskey" value="XXXXX">
        <button type="submit" class="btn btn-secondary"
            id="single_button63e72688e9fda7"
            title=""
           
            >Torna a qualificar igualment</button>
    </form>
</div><div class="singlebutton">
    <form method="post" action="https://XXXXXXX/mod/quiz/report.php" >
            <input type="hidden" name="q" value="59953">
            <input type="hidden" name="mode" value="overview">
            <input type="hidden" name="sesskey" value="XXXXXXX">
        <button type="submit" class="btn btn-secondary"
            id="single_button63e72688e9fda8"
            title=""
           
            >Cancel·la</button>
    </form>
</div></div></div>

We should consider this output in order to know if the current process is enough or we need extra process for the gradebook.