Translations: Lightweight Contracts/16/en

Unlike many other contract development frameworks, lightweight contracts are not executed by every node on the blockchain, instead node operators have to configure their node to run contracts by registering the contract runner addon. The contract runner monitors every new block for trigger transactions. When found it triggers the respective contract after loading it from the blockchain. The contract runner also supports contracts which execute on every block and provides APIs for triggering contracts directly or using a transaction voucher.