Fixed stock simulator to show data up to 7 days later.

You can edit purchaseValue and salesValue with the editAll command. (If purchaseValue is modified while two values are the same, salesValue is also changed. To make two values different, you need to modify salesValue first)

Fixed an issue where max stock related data was lost when moving items in the shop.

Minor improvements to autocompletion of commands.

※ The item rotation feature isn't included in this build as it's not ready yet.