* Move application architecture guide
* Changing titles etc
* Reshuffling
* More reshuffling of files and content
* Refactoring iinto more sensible pages:
* Getting most stuff into place
* A ton of tidying up
* Fixing things up
* Tidying up
* Address review comments
* Fixes
* Fix warnings etc
* Update redirects
* Try to add copyright header
* Fix headers issue
* Clarify DAML-LF relationship
* Change I missed
