Adding some management commands to the downloads application to help manage the SG101 MP3 compilations. Added a command to generate a HTML report of all the downloads in a given category. Added a command that generates a bash script that wgets all the files in a category.

<div class="side-block">
<div class="side-block-title">
{% block block_title %}{% endblock %}
</div>
<div class="side-block-content">
{% block block_content %}{% endblock %}
</div>
</div>