mod_http_muc_log: Fix redirect bug If you somehow went to /muc_log/room/yyyy-mm-dd/something it would send you in a redirect loop that continuously added path components until the path can't be parsed anymore. This should ensure that /muc_log/room/date/ is simply 404'd

This module lets you block connections to any remote servers not on a
whitelist.

``` {.lua}
modules_enabled = {
    -- other modules --
    "s2s_whitelist",

}
s2s_whitelist = {
    "example.org",
}
```