scinote-web/app/views/shared/_about_modal.html.erb

<div class="modal" id="aboutModal" tabindex="-1" role="dialog" aria-labelledby="aboutModal" data-role="about-modal">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h4 class="modal-title"><%= t('about.modal_title') %></h4>
      </div>
      <div class="modal-body">
        <strong><%= t('about.core_version') %></strong>
        <br />
        <%= Scinote::Application::VERSION %>
        <br />
        <br />
        <div data-hook="about-modal-addon-versions">
          <strong><%= t('about.addon_versions') %></strong>
          <br />
          <% list_all_addons.each do |addon| %>
            <%= "#{addon.name}:" %>
            <br />
            <%= addon::VERSION %>
            <br />
            <br />
          <% end %>
        </div>
      </div>
    </div>
  </div>
</div>