+ Fixed bug where the navigation buttons would not display page number when on page 1 or last page (they shouldn't even show up)
+ Added missing navigation button customization (material/name/lore)
+ Fixed bug where the custom fill slots would not apply properly causing the gui to not to size correctly.
+ Fixed issue with slot filling which caused items to fill out of order / overflow
+ The shop content list / cart / and purchase menus will show the purchase qty on the item up to 64