Updates to docs for 0.7.0. Includes YAML GS and new Location section.
- GS split to 1) Download and Deploy, 2) Catalog and Polices
- brooklyn.properties use correct jclouds prefix
- many screenshots added
- YAML sample moved to include file
- Deprecated help file contents removed.

Updated YAML to use https bitly (redirect works for https) and better fomrat the db.url.
Merge pull request #1328 from jdtoy/gs-update-squash

Updates to docs for 0.7.0. Includes YAML GS and new Location section.