[Core] Remove Old Javascript Libraries

[panigrc]

Remove old JavaScript libraries and replace the used ones with newer versions

• [x] DHTML Calendar (PHP library Calendar_library.php & JavaScript Files assets/jscalendar/)
• [x] Scriptaculous (assets/scriptaculous) bb17283c7ba1cf727569cd465f4534fbad189425
• [x] Validation (assets/validation) b3e4aebaa4792de58892c9ad450bd17b6ad8bb7f
• [x] FCKEditor (PHP libraries Fckeditor.php, Myfckeditor.php & JavaScript Files assets/FCKEditor)