feat: Note sensitive config values as hidden when set in UI

Author: sman591

app/views/manage/configs/_config_row.html.haml

@@ -11,7 +11,7 @@
   %br
   - if value.present?
     - if secret
-      %span.badge.badge-success Set
+      %span.badge.badge-success Set (hidden)
     - else
       %pre= value
   - elsif required