The google image chart API has been deprecated since 2012, sending the
URL to google leaks server IDs and the client's IP address (especially
important when the client is otherwise behind Tor), and the X-axis has
no units anyways.
refs ticket:1942 , which is both about removing the URL-based chart, and
eventually replacing it with a browser-rendered d3.js-based one
- Renamed xhtml Title from "Allmydata - Tahoe" to "Tahoe-LAFS"
- Renamed Tahoe to Tahoe-LAFS in page content
- Changed Tahoe-LAFS home page link to http://tahoe-lafs.org (added target="blank")
- Deleted commented css script in info.xhtml
