Adds a dropdown for sorting Hacker News (Y Combinator) by various criteria
This script adds a select dropdown to the HN header bar, containing options for sorting
the stories posted on the main (index) page:
auto: Sort by a combination of votes and comments (both can optionally be weighted).
This keeps the most active stories near the top; useful if you don't visit HN every
couple of hours or so.votes: Sort by votes on posts (descending).comments: Sort by number of comments (descending).newest: Sort by age (descending).oldest: Sort by age (ascending).rank: Original HN sorting.The last selected sorting option is saved to localStorage and recalled when the page
is loaded again.
