qnd: This class shouldn't extend kalturaObject, and the extension causes some caching problems (Map objects)

git-svn-id: svn+ssh://kelev.kaltura.com/usr/local/kalsource/backend/server/tags/gemini_2013_02_18@94906 6b8eccd3-e8c5-4e7d-8186-e12b5326b719
def: 7341: Sub forms do not require additional security validation.

git-svn-id: svn+ssh://kelev.kaltura.com/usr/local/kalsource/backend/server/tags/gemini_2013_02_18@94908 6b8eccd3-e8c5-4e7d-8186-e12b5326b719
adding empty directories