Fix site topology button url

Now renders using Django url template.

Author: iDebugAll

nextbox_ui_plugin/templates/nextbox_ui_plugin/site_topo_button.html

@@ -10,7 +10,7 @@
                     <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
                     <h2 class="modal-title" style="text-align: center;">{{ object.name }} Topology</h2>
                 </div>
-        <iframe src="/plugins/nextbox-ui/site_topology/{{ object.id }}/" style="height: 75vh; width: 100%;"></iframe>
+        <iframe src="{% url 'plugins:nextbox_ui_plugin:site_topology' site_id=object.id %}" style="height: 75vh; width: 100%;"></iframe>
         </div>
     </div>
 </div>

nextbox_ui_plugin/urls.py

@@ -2,5 +2,5 @@
 from . import views
 
 urlpatterns = [
-    path('site_topology/<int:site_id>/', views.TopologyView.as_view()),
+    path('site_topology/<int:site_id>/', views.TopologyView.as_view(), name='site_topology'),
 ]