Books: Check 'em out

I fixed the Headmaster book crash, I am very sorry about that one.

Also I fixed a bug that might make Light Shield players angry. But I accept all responsibility, please direct your angry letters of wrath to me, @zircon on the discord.

1.2c10 * Light Shield and Flux Shield no longer add bonus damage to their reflective attacks from a high Science score. * Fix for crash when turning in books. * mod stuff mod stuff mod stuff