ATHENS, Greece – Greek banks opened their doors Monday for the first time in over three weeks, a move the government hopes will help the economy get back to normal following a period dominated by fears over the country’s future in the euro. Strict controls on the amounts individuals can withdraw remain, however, and new austerity taxes demanded by the country’s European creditors came into effect, making most everyday items more expensive – from coffee to taxis. The hefty sales tax rise on many basic goods from 13 percent to 23 percent formed part of a package of confidence-building measures the Greek government had to introduce for negotiations on a third bailout to begin.