Add an additional script for updater

git-svn-id: https://ajaxplorer.svn.sourceforge.net/svnroot/ajaxplorer/trunk@3473 3bf36de4-da32-0410-8312-848cfbfe3f7d
Clear i18n files after update

git-svn-id: https://ajaxplorer.svn.sourceforge.net/svnroot/ajaxplorer/trunk@3474 3bf36de4-da32-0410-8312-848cfbfe3f7d