Only show Restart Filemon button if so configured

otherwise everyone would need to include that view in their config

tailbone/views/datasync.py

@@ -63,6 +63,10 @@ class DataSyncChangesView(MasterView):
         g.set_sort_defaults('obtained')
         g.set_type('obtained', 'datetime')
 
+    def template_kwargs_index(self, **kwargs):
+        kwargs['allow_filemon_restart'] = bool(self.rattail_config.get('tailbone', 'filemon.restart'))
+        return kwargs
+
     def restart(self):
         # TODO: Add better validation (e.g. CSRF) here?
         if self.request.method == 'POST':