mod_cloud_notify: Reverse dependencies These 3 modules depend on mod_cloud_notify, so this should be reflected in the metadata. And the dependency resolver gotta have something to do! :)

This module blocks configured queries that change server state.

E.g. to make vCard storage read-only:

``` lua
readonly_stores = {
	vcard = { "vcard-temp", "vCard" };
}
```