Storybook: "previous" from first page, "next" from last page

[wjt]

Currently in the storybook, you can turn to the "previous" page (left arrow) on the first page:

This takes you to the last page, where you can turn to the "next" page (right arrow) to go back to the front page:

This is not how books work. There should be no left-arrow when on the first page, and no right-arrow when on the last page.

XP Summary (total 275)

Subdomain	Skill	XP
Game Design: Game Feel & UX	Problem Solving	75
Game Design: Game Feel & UX	Creativity & Design Thinking	50
Game Design: Game Feel & UX	Technical Literacy	150