If there's a Python install manager, use for Windows

Author: hugovk

templates/downloads/release_detail.html

@@ -50,7 +50,11 @@ <h2 class="page-title">Files</h2>
             <div class="featured-download-box">
                 <h3>{{ f.os.name }}</h3>
                 <p class="download-buttons">
+                    {% if f.os.slug == 'windows' and latest_pymanager and release.is_version_at_least_3_5 %}
+                    <a class="button" href="https://www.python.org/downloads/latest/pymanager/">Download Python install manager</a>
+                    {% else %}
                     <a class="button" href="{{ f.url }}">Download {{ f.name }}</a>
+                    {% endif %}
                 </p>
             </div>
             {% endfor %}