Language sort order for easy to check

When we export language files :

Languages Settings -> Languages -> Export

language file of content just a bit messy. My my suggestion is add a "ksort($aContent);" in lang_file.php :

administration/lang_file.php

    foreach($aItems as $aItem)

        $aContent[$aItem['key']] = $aItem['string'];

    ksort($aContent);

    $sName = 'lang_' . $aLanguage['Name'] . '.php';

Thank you for the suggestion:

https://github.com/boonex/dolphin.pro/issues/428