adds a prompt when readonly as an admin

package.json

@@ -98,7 +98,7 @@
         "c9.ide.preview.browser": "#cec211a76a",
         "c9.ide.preview.markdown": "#ab8d30ad9f",
         "c9.ide.pubsub": "#a85fb27eca",
-        "c9.ide.readonly": "#c699cb172b",
+        "c9.ide.readonly": "#e67bb593bd",
         "c9.ide.recentfiles": "#7c099abf40",
         "c9.ide.remote": "#301d2ab519",
         "c9.ide.processlist": "#2b12cd1bdd",