PRAGUE (Reuters) – Thousands of people poured into Prague’s medieval Old Town Square at the weekend for the lighting of a 25-metre (80-foot) Christmas tree and the reopening of the annual market after a two-year COVID-19 shutdown, but the energy crisis meant fewer lights than usual. The market, which is popular with Czechs and foreign tourists alike thanks to its mulled wine, sausages, sweets and gifts, was set up with more energy-efficient bulbs to both save money and send a seasonal message of energy efficiency. “We have decided to cut back on the numbers of illuminated ornaments in the stre…