Brought script up-to-date and overhauled it

1. Updated metadata block
2. Added an update URL
3. Removed jquery as it seemed unnecessary
4. Now removes right ad
5. Now removes Sparklife menu item
6. Now removes "From the B&N Book Blog" box
7. Changed div.col-mid width to fit correctly
8. Changed div.next-title width to fit correctly
9. Commented out $('iframe').remove(); as I don't know if it is
necessary
10. Commented out $('ins').remove(); as I don't know if it is necessary