Merged with your changes, vertical centering, bug fixes, even more perf improvements, #1-9 hotkey navigation that can be used, and got the chrome.sync API all ready to go

OK, have a gander and see my merge with your defaultfolder changes you made the other day, hopefully you will like the sync and enjoy how fun it is to see sync across rooms or browser sessions etc :P
Had a short fling with Zepto but switched back to jQuery + jQuery-UI.
The dial now vertically centers itself and you can use shortcut keys "s" or "o" to get to the options page and you can press numbers 1-9 to quickly go to one of the dials that are represented by the single digits 1-9, the dial needs focus to get the keypress event tho.

BTW I'll mess with thumbnail generation after you push this version to the store.

Thing is, we need an event handling page to be alive after we click through a dial, since in our case the speed dial process dies as soon as we navigate away from the dial so even timeouts or anything wont fire.  
So having sync support as step 1 to thumbnails I think is an OK 1st step right? :)