Add some products to the docs page

Specifically, we had queues, cloud monitoring and auto scale in the left-hand side bar but not in the actual body of the page.  Likewise, I added Cloud Backup to the sidebar although it was in the main body of the page.

I also reordered the page to match the order of the sidebar.

A couple questions remain:

1. Should there be a Getting started guide for Cloud Backup?
2. What should the order be?
3. where do we get images from?

Thanks
Added getting started guides

Added the getting started guides for Cloud Monitoring, Autoscale, and Cloud Queues.
Removing Cloud Backup API docs from sidebar

Cloud Backup doesn't have a developer.rackspace.com getting started guide so I removed it from my earlier commit to keep the sidebar pointing to a consistent location.
Alphabetized and added images

I alphabetized the page and the sidebar.

I also added two little icons for Cloud Queues and Cloud Monitoring.  I couldn't find a logo for Auto Scale, but it looks like the convention is to use Cloud Servers' logo so I did the same.
Merge pull request #978 from rackerlabs/stackedsax/add_missing_products_docs_page

Add some products to the docs page