Add export button

Signed-off-by: Emmy D'Anello <emmy.danello@animath.fr>

draw/templates/draw/tournament_content.html

@@ -148,6 +148,14 @@
                              </div>
                         </div>
                     </div>
+                    {% if user.registration.is_volunteer %}
+                        <div id="export-{{ tournament.id }}"
+                             class="card-footer text-center{% if not tournament.draw.exportable %} d-none{% endif %}">
+                            <button class="btn btn-info text-center" onclick="exportDraw({{ tournament.id }})">
+                                📁 {% trans "Export" %}
+                            </button>
+                        </div>
+                    {% endif %}
                 </div>
             </div>
         </div>