<fieldset class="named logo">
  <legend>Logo</legend>
  <div class="control-group">
    <%= image_tag classification_form.object.logo_url if classification_form.object.logo_url %>
    <%= classification_form.text_field :logo_alt_text, label_text: 'Alt text' %>
    <%= classification_form.upload :logo, label_text: 'File' %>
  </div>
</fieldset>

<fieldset class="named logo">
  <legend>Logo</legend>
  <div class="control-group">
    <%= image_tag classification_form.object.logo_url if classification_form.object.logo_url %>
    <%= classification_form.text_field :logo_alt_text, label_text: 'Alt text' %>
    <%= classification_form.upload :logo, label_text: 'File', allow_removal: classification_form.object.logo_url.present? %>
  </div>
</fieldset>

Allow removal of logos from topical events
Allow removal of logos from topical events

If the topical event has a logo, then render a checkbox to allow removing it.
