fwr: null object reference occurs in isAllowedPartner

git-svn-id: svn+ssh://kelev.kaltura.com/usr/local/kalsource/backend/server/trunk/core@94532 6b8eccd3-e8c5-4e7d-8186-e12b5326b719
fwr: avoid errors when serializing string

git-svn-id: svn+ssh://kelev.kaltura.com/usr/local/kalsource/backend/server/trunk/core@94533 6b8eccd3-e8c5-4e7d-8186-e12b5326b719
adding empty directories
adding empty directories