mod_http_muc_log: Move template into a directory to ease packaging There's no LuaRocks directive like `copy_directories` for individual files, short of writing a whole custom installation method.

This module blocks configured queries that change server state.

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

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