UX: Replace staff notice icon with user-shield.

app/assets/javascripts/discourse/widgets/post-admin-menu.js.es6

@@ -40,14 +40,14 @@ export function buildManageButtons(attrs, currentUser, siteSettings) {
   if (currentUser.staff) {
     if (attrs.noticeType) {
       contents.push({
-        icon: "asterisk",
+        icon: "user-shield",
         label: "post.controls.remove_post_notice",
         action: "removeNotice",
         className: "btn-default remove-notice"
       });
     } else {
       contents.push({
-        icon: "asterisk",
+        icon: "user-shield",
         label: "post.controls.add_post_notice",
         action: "addNotice",
         className: "btn-default add-notice"

app/assets/javascripts/discourse/widgets/post.js.es6

@@ -453,7 +453,7 @@ createWidget("post-notice", {
         : attrs.name;
     let text, icon;
     if (attrs.noticeType === "custom") {
-      icon = "asterisk";
+      icon = "user-shield";
       text = attrs.noticeMessage;
     } else if (attrs.noticeType === "new_user") {
       icon = "hands-helping";