Change Trapdoors

It would be nice if trapdoors expecially irontrapdoors could start in the open state. That would allow for some more building options. Right now open iron tarpdoors can only be created with command. Open Trapdoors should also switch to closed and then to open again when a button is pressed. At the moment they stay open and then close as the redstone signal from the buttom vanishes.

As trapdoors are often used for building there should also be a flag to lock them so there state can not be changed. Cause this is mostly needed for creative world/building worlds it would be enough if this state could be set via command.