DUBAI (Reuters) – Iran’s courts will deal firmly with anyone who causes disruption or commits crimes during a wave of anti-government protests, the judiciary said on Tuesday, signalling the authorities intend to hand down harsh sentences to convicted demonstrators. One of the biggest challenges to Iran’s clerical leaders since the 1979 Islamic Revolution, the demonstrations have already persisted for eight weeks despite tough security measures and tough warnings from security forces. More than 1,000 people have been indicted in Tehran Province alone in connection with what the government calls…