Improve notifications (#16632)

* add notification cooldown

* cooldown docs

* show alert box when notifications are used in an insecure context

* add ability to suspend notifications from dashboard context menu

web/components.json

@@ -11,6 +11,9 @@
   },
   "aliases": {
     "components": "@/components",
-    "utils": "@/lib/utils"
+    "utils": "@/lib/utils",
+    "ui": "@/components/ui",
+    "lib": "@/lib",
+    "hooks": "@/hooks"
   }
-}
+}