-Minor spacing changes on select boxes
-Fixed a bug with displaying result-less cells
-Removed extraneous console.log calls
-Moved :pre element into the root result-template
-Added note about killed cells needing to be removed from *notebook* (can't remember off the top of my head how to remove a property from a JS object; look it up later)
-Fixed improper target bug in 'rename-book event
-Added kill-notebook infrastructure (sending signal, receiving event and moving relevant notebook file out to trash/)
-Minor notes and cleanup
-Deleting a cell now also changes the *notebook* model