feat: tarjeta cacheada de instancia

app/views/moderation_queue/_instance.haml

@@ -1,15 +1,17 @@
+- usuaries   = instance.content.dig('usage', 'users', 'active_month')
+- usuaries ||= instance.content.dig('stats', 'user_count')
+
 .row.no-gutters.pt-2
   .col-1
     = render 'components/checkbox', id: instance.hostname, name: 'instance_moderation[]', value: instance_moderation.id, data: { target: 'select-all.input' }
   .col-11
     %h4
-      %a{ href: instance.uri }= instance.content['title']
-    %p= instance.content['description'].html_safe
-    %dl
-      %dt.d-inline= t('.users')
-      %dd.d-inline
-        = instance.content.dig('usage', 'users', 'active_month')
-        = instance.content.dig('stats', 'user_count')
+      %a{ href: instance.uri }= sanitize(instance.content['title']) || instance.hostname
+    %p= sanitize instance.content['description']
+    - if usuaries.present?
+      %dl
+        %dt.d-inline= t('.users')
+        %dd.d-inline= sanitize usuaries.to_s
 
     -# Botones moderación
     .d-flex.pb-4

app/views/moderation_queue/_instances.haml

@@ -12,8 +12,9 @@
           %h3= t('moderation_queue.nothing')
 
         - instance_moderations.each do |instance_moderation|
-          %hr
-          = render 'moderation_queue/instance', instance_moderation: instance_moderation, instance: instance_moderation.instance
+          - cache [instance_moderation.aasm_state, instance_moderation.instance] do
+            %hr
+            = render 'moderation_queue/instance', instance_moderation: instance_moderation, instance: instance_moderation.instance
 
       %hr
   %div