Deploy to azure

- Merge "Deploying Orchard to Windows Azure Web Site and SQL Database" into the "Deploying Orchard to Windows Azure", then delete the former, because having two topics on Azure may confuse users.

- Clean up the table of contents of the "Deploying Orchard to Windows Azure" topic, by changing header-2 elements to strong elements, because the TOC was becoming non-useful with too many header-2 elements.