feat(navigation): hard-switch to Zibll navigation and Font Awesome 5

assets/js/follow.js

@@ -87,12 +87,12 @@
 
     if (isFollowing) {
       btn.classList.add('is-following');
-      if (icon) icon.className = 'fas fa-heart';
+      if (icon) icon.className = 'fa fas fa-heart';
       setLabel('已关注');
       btn.title = '点击取消关注';
     } else {
       btn.classList.remove('is-following');
-      if (icon) icon.className = 'far fa-heart';
+      if (icon) icon.className = 'fa fas fa-heart';
       setLabel('关注');
       btn.title = '关注该用户';
     }