LONDON (Reuters) - Britain's pound rallied more than 1.5% against the dollar and found firmer ground against the euro on Tuesday, winning a respite from a battering in recent days. Sterling, along with most currencies, has seen a massive wave of selling against the U.S. dollar, the world's most liquid currency and the safe haven of choice when confidence evaporates from financial markets.It has also been hurt by concerns over Britain's approach to dealing with the coronavirus outbreak, which has..