fix the Zend_Loader::Zend_Loader::registerAutoload is deprecated error on install page
fix the Undefined variable: menuLink warning
fix no admin right granted for the tags folder problem
    NOTE: I didn't changed the related lines but w/o run it with PHPUnit as,
    current class autoloading doesn't work for all Test Case files,
    and it will be too many works to get the PHPUnit codes run.
fix "The method getLanguageTranslation is deprecated." notice on /admin/config page