qnd: disable embedding login pages in frames, and removed user data from secure_form.php

git-svn-id: svn+ssh://kelev.kaltura.com/usr/local/kalsource/backend/server/tags/gemini_2013_01_07@93995 6b8eccd3-e8c5-4e7d-8186-e12b5326b719
adding empty directories