owner can de-activate contract

[marc-wagner]

should LiquidDemocracy.sol have a function to de-activate the contract and refund any outstanding ETH to owner i.e. like this?

// constructor
function LiquidDemocracy()public {
contract_owner = msg.sender;
}

//deactivate the contract
function kill () public {
    //only allow contract owner
    require (msg.sender == contract_owner);
    selfdestruct(contract_owner);

}