Remove trailing comma
Override Router.navigate to scroll the page to the top

- Create an NS.scrollTops object to store the page top for each path
- Return to the top of the page unless data-noscroll is specified in the link
Add data-noscroll to tab links
Improve URL detection and replacement

Have the link detetion pattern only remember those parts of the pattern that
it will need to -- namely the URL as one big chunk, and whatever comes after
the URL as one big chunk.
Make ally question a little clearer
Expand and comment the Twitter and URL regex patterns
Put some space between the Add an Image and Tweet This Vision buttons