Add “Glitch-only” label to glitch-specific settings

app/javascript/flavours/glitch/styles/accounts.scss

@@ -205,7 +205,8 @@
 
 .account-role,
 .simple_form .recommended,
-.simple_form .not_recommended {
+.simple_form .not_recommended,
+.simple_form .glitch_only {
   display: inline-block;
   padding: 4px 6px;
   cursor: default;
@@ -236,6 +237,12 @@
   border-color: rgba(lighten($error-red, 12%), 0.5);
 }
 
+.simple_form .glitch_only {
+  color: lighten($warning-red, 12%);
+  background-color: rgba(lighten($warning-red, 12%), 0.1);
+  border-color: rgba(lighten($warning-red, 12%), 0.5);
+}
+
 .account__header__fields {
   max-width: 100vw;
   padding: 0;

app/javascript/flavours/glitch/styles/forms.scss

@@ -104,7 +104,8 @@ code {
       }
 
       .recommended,
-      .not_recommended {
+      .not_recommended,
+      .glitch_only {
         position: absolute;
         margin: 0 4px;
         margin-top: -2px;