$cache should have been $this->cache

git-svn-id: file:///var/www/svn/anahita/anahita/branches/search@17071 a933e228-e664-4d3f-8241-49479697c698
added flash object to hold flash items for one the durtion of one request

git-svn-id: file:///var/www/svn/anahita/anahita/branches/search@17072 a933e228-e664-4d3f-8241-49479697c698