Add new contributors to Help > About (#985)
Add new contributors to Help > About (#985)

make the window a little wider and put the contributor names into 5 columns
OpenPHDGuiding/phd2,OpenPHDGuiding/phd2,OpenPHDGuiding/phd2,OpenPHDGuiding/phd2,OpenPHDGuiding/phd2,OpenPHDGuiding/phd2