Cloning login dropdown from rackspace.com

- Fixes #466
Adding developer trial page

- Fixes #465
- Adds homepage links to /devtrial
Merge pull request #473 from rackerlabs/gh-465

Adding developer trial page
Merge pull request #472 from rackerlabs/gh-466

Cloning login dropdown from rackspace.com
Forgot to remove old code.
Merge pull request #475 from ycombinator/redirect-old-blog-links

Forgot to remove old code.
add requirements to pyrax getting started page