feat(widgets): ranking identity, moderators follow, plate chrome

Align UserRanking to zibll user-ranking-item + aksrt_get_user_name + badg,
render moderators via shared rows with follow, deepen plate info cover/stats,
and clean forum tab/terms empty shells.

src/AKSRT/Widgets/WidgetForumTabTopics.php

@@ -88,7 +88,7 @@ class WidgetForumTabTopics extends \WP_Widget {
 				.then(function(r){return r.json()}).then(function(j){
 					var d=(j&&j.data)||j||{};
 					var html=d.html||'';
-					panel.innerHTML=html||'<p class="aksrt-ftab__empty">暂无内容</p>';
+					panel.innerHTML=html||'<div class="ajax-item aksrt-ftab__empty muted-2-color">暂无内容</div>';
 					panel.setAttribute('data-loaded','1');
 					panel.classList.remove('is-ajax-loading');
 				}).catch(function(){panel.classList.remove('is-ajax-loading');});