PageInFrame upgrade
PageInFrame upgrade

1) Added comments with examples how to use it in page and in grid.
2) Fixed some bugs in gridMode.
xepan/atk4-addons,atk4/atk4-addons,atk4/atk4-addons,atk4/atk4-addons,xepan/atk4-addons,xepan/atk4-addons