support the quicksubscribe plugin

css/plugins/quicksubscribe.less

@@ -0,0 +1,24 @@
+/**
+ * This file provides styles for the quicksubscribe plugin
+ */
+
+.page-attributes {
+    li.plugin_quicksubscribe {
+        a.plugin_qsub_subscribe {
+            svg {
+                width: 1.6em;
+                height: 1.6em;
+                font-size: 0.82rem;
+                fill: @ini_nav_menu_hover_color;
+            }
+        }
+
+        a:hover,
+        a:focus,
+        a:active {
+            svg {
+                fill: @ini_nav_menu_hover_bg;
+            }
+        }
+    }
+}

style.ini

@@ -108,6 +108,7 @@ css/plugins/extension__manager.less   = all
 css/plugins/folded.less               = all
 css/plugins/configmanager.less        = all
 css/plugins/starred.less              = all
+css/plugins/quicksubscribe.less       = all
 
 css/plugins/data.less                 = all
 

tpl/nav-page-attributes.php

@@ -7,6 +7,8 @@ $doPlugin = plugin_load('helper', 'do');
 $qcPlugin = plugin_load('helper', 'qc');
 /** @var \action_plugin_starred $starredPlugin */
 $starredPlugin = plugin_load('action', 'starred');
+/** @var \helper_plugin_quicksubscribe $quickSubPlugin */
+$quickSubPlugin = plugin_load('helper', 'quicksubscribe');
 
 if($doPlugin !== null || $qcPlugin !== null || $starredPlugin !== null) {
     echo '<ul class="page-attributes">';
@@ -48,6 +50,12 @@ if($starredPlugin !== null) {
     echo '</li>';
 }
 
+if($quickSubPlugin !== null) {
+    echo '<li class="plugin_quicksubscribe">';
+    echo $quickSubPlugin->tpl_subscribe();
+    echo '</li>';
+}
+
 if($doPlugin !== null || $qcPlugin !== null || $starredPlugin !== null) {
     echo "</ul>";
 }