Merge pull request #3511 from owncloud/sessionclass

apps/files_encryption/hooks/hooks.php

apps/files_encryption/lib/proxy.php

apps/files_encryption/lib/session.php

apps/files_encryption/lib/stream.php

apps/files_encryption/lib/util.php

apps/files_encryption/tests/crypt.php

apps/files_encryption/tests/util.php

apps/files_sharing/public.php

lib/base.php

lib/session/internal.php

lib/session/memory.php

lib/session/session.php

lib/template.php

lib/user.php

lib/util.php

tests/lib/session/memory.php

tests/lib/session/session.php

tests/lib/user/backend.php

tests/lib/user/database.php

tests/lib/user/dummy.php