Started a re-write of the product documentation

The documentation was severely lacking in density. So I decided to take the good parts of the previous docs site, and redesign the layout. My goal is to make it easy and convenient to write product documentation.

To accomplish this goal, I moved away from a docs.* subdomain to a https://www.amezmo.com/docs subdirectory instead. This allows for easier documentation updates. While there is still A LOT of documentation to write, I feel that I've laid the foundation for great documentation.