[dev] Local-based sort

[persian-horde@metanetworking.com]

> Quoting persian-horde at metanetworking.com:
>
>> As u said the imp config.php is not a correct place for this setting.
>> Because the sort problem for some locales exists in other packages
>> such as turba, we think that it's better to put this setting in horde
>> nls.php, so we can use it in any application that is required:
>> $nls['locale_sort']['fa_IR'] = true;
>
> You still haven't answered why you think this should be configurable.

I don't think it's configurable. But why you placed $nls['rtl']['fa_IR']
=true;  in nls.php? it's exactly the same, the rtl is not configurable too.

I think it's the best place that we can add it, it enables us to add
additional language to this array, and also makes the code more cleaner.
Also when the c-client and lower layer applications fixed the localization
problems, we could omit this easily.

Thanks,
Persian Horde