<p>
<em>
  <%= _('Drag images to add them to the text.') %>
  <%= _('Click on file names to add links to the text.') %>
</em>
</p>

<p>
<em>
  <%= _('Drag images to add them to the text or click on file names to add links to the text.') %>
</em>
</p>

Join the note about drag and drop for clarity
SAC466: Join the note about drag and drop for clarity