By Paul Taylor BERLIN (Reuters) - Buoyed by solid finances, roaring exports and low unemployment, Germany increasingly sees itself as the only grown-up in Europe, responsible for bringing wayward children into line to hold the family together. The children are not enjoying it. Some, such as the Cypriots and Greeks and many Italians and Spaniards, are openly resentful of "Mutti" (mum), as Berlin officials privately call Chancellor Angela Merkel. Others, such as the French, are sulking. ...