mod_voipms: Fix bug from not returning in message/bare hook Since SMS/MMS are sent/received on JIDs that are not real accounts, we need to `return true` from the 'message/bare' hook, otherwise routing will occur and result in failed account lookups.

This module blocks configured queries that change server state.

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

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