Make ethical ads the default

Author: bnmnetp

runestone/common/project_template/_templates/plugin_layouts/sphinx_bootstrap/layout.html

@@ -23,6 +23,7 @@
 {# Override the scripts block from sphinx so we can force loading of jquery/underscore/doctools js files #}
 {{ js_defer(script_files) }}
 {{ super() }}
+<script src="https://media.ethicalads.io/media/client/ethicalads.min.js"></script>
 {%- endblock %}
 
 {# Sidebar: Rework into our Boostrap nav section. #}
@@ -342,7 +343,9 @@ <h4>Before you keep reading...</h4>
   {% if dynamic_pages == 'True' %}
     {% raw %}
       {% if show_ethical_ad  %}
-      <div data-ea-publisher="runestoneacademy" data-ea-type="image" data-ea-style="stickybox"></div>
+      <div style="width: 100%">
+      <div data-ea-publisher="runestoneacademy" data-ea-type="image" style="display: flex; justify-content: center"></div>
+      </div>
       {% endif %}
     {% endraw %}
   {% endif %}