Suggestion: Way to Lock the Spellbook

I have a minor suggestion. It's mostly an OCD thing on my part. My SB is completely filled out and upgraded. I have my book organized by categories and in a certain order for ease of finding things - weapons, wall, ceiling, floor, trinkets. For whatever reason, sometimes when I click to take something off my bar, the items do not go back to their original locations in the book. After some time, I have to reorganize the book. As we gain more traps and items with each DLC, being able to find things becomes more important. Sometimes I accidentally drag items around through miclicking. Minor peeve. I don't mean to whine.
 
Here's how I want my book to look:
http://i.imgur.com/ETW6W.png
 
Here's how it ended up after hours of play:
http://i.imgur.com/b5V7M.png