Added architecture page, extract setting up a SQL Layer instance in a multi-node deployment from configuration.rst to the architecture page. Refactored Next Steps for all installers to it's own include file
added comments from discussion about diagrams
added alternative architecture
fix code parts in the 'Loading data into the employees schema' section.
tweak first paragraph in main index - reading through the docs part
tradeoffs we made --> make in index
architecture diagrams
added questions from first week of Alpha 1 users to FAQ
draft of physical architecture page
add architecture page to main index
apply pull request comments
fix single link in installtion instructions to FDB cluster config file
Merge pull request #6 from oriherrnstadt/architecture

Add Physical Architecture page