fixed again the Dutch language
Updated Dutch language file (Thanks to Bramus)
search: added search_time_limit in settings (mainly for sites with PHP < 4.3.3 and slow search)
added missing text in language-files
added missing Dutch language files for core modules
added new languages to install script; fixed some issues and typos in languagefiles
Added missing text in languages files for jscalendar
Replaced all special chars in language files with htmlentities or unicode.
Added some missing lines in language files.
added some more backend layout modifications, corrected bug in NL.php language file
Added new language files