Make sure the player that send the message is not removed from the
recipients.

Signed-off-by: Staartvin <mijnleraar@msn.com>
Allow to set the enemies or allies list.

Signed-off-by: Staartvin <mijnleraar@msn.com>
Make sure all enemies and allies are still valid.

Signed-off-by: Staartvin <mijnleraar@msn.com>
Add extra check so that it returns false when the ally gang is null.

Signed-off-by: Staartvin <mijnleraar@msn.com>