By Sachin Ravikumar LONDON (Reuters) – One of Britain’s biggest miscarriages of justice, the wrongful conviction of hundreds of Post Office workers due to faulty software, has exploded into the public domain following a TV drama, sparking demands for justice. In a more than 20-year scandal, some postal workers were sent to prison and others lost their livelihoods and homes. An independent inquiry as well as a police investigation into the scandal are ongoing, and top business executives and former ministers are in the firing line. Below is a detailed look at the case: WHAT IS THE POST OFFICE S…