This is great, the first scrapbook-style addon I've seen that reproduces the functionality of the original to delete parts and add highlights to saved pages, and with the fully editable sidebar index, and being able to use my existing Scrapbook data is brilliant. I just have a couple of suggestions:

1) Right-clicking on an entry in the sidebar, to delete or rename a saved page, also opens a new copy of that page. Ideally a right-click should just open the popup menu, and not load the page.

2) As well as ctrl-clicking to open a saved page in a new tab, it would be great if middle-clicking also be made to do this, as with middle-clicking links in the browser.