IAEA Admin Defaults module updated: photo gallery content type added

Signed-off-by: Kresimir Nikolic <kresimir.nikolic@gmail.com>
IAEA Admin Defaults module renamed to IAEA Date Sync

Signed-off-by: Kresimir Nikolic <kresimir.nikolic@gmail.com>
IAEA Date Sync module description updated

Signed-off-by: Kresimir Nikolic <kresimir.nikolic@gmail.com>