Create video blocks: added support to youtube videos.

Signed-off-by: Arthur Del Esposte <arthurmde@yahoo.com.br>
Signed-off-by: Daniel Bucher <daniel.bucher88@gmail.com>
Signed-off-by: Gabriela Navarro <navarro1703@gmail.com>
Signed-off-by: Carlos André <carlos.andre.souza@msn.com>
Signed-off-by: Luiz Matos <luizff.matos@gmail.com>