Merge pull request #35 from cardosogabriel/master

Heading margins, striped table for builds
Add Java install page to docs
Add support for Asciidoc embedded within Haml
Split duplicate information on install into a common file to be used by docs and downloads
Update documentation nav with the levels to populate
Add some placeholders for additional documentation pages
Add details for installing docker container
Rework install doc
Add screencast links
Add services page to advanced topics
Add specific services page for postgresql
Fix some navigation
Add page on subscriptions