By Antony Clements-Thrower Nothing can be more normal than friends giving each other nicknames, and that is true for all including the third in line to the throne – and it isn’t princess. Prince William and Princess Kate are determined daughter Princess Charlotte, eight, enjoys as normal a childhood as is possible for a young girl who is third in line to the throne. At school she is registered as Charlotte Cambridge, but her friends call her by a nickname she is said to adore. Reports suggest her pals shorten her name and call her Lottie Wales, as a nod to her parents’ titles given to them by …