Review developer setup docs, automate setup process

[daveoconnor]

The documentation for developer onboarding is spread across multiple files, with inconsistent and/or unclear commands that are to be used. Much of this could be automated and consolidated.

[sdarwin]

@daveoconnor

notice the scripts in docs/scripts:

• dev-bootstrap-linux.sh
• dev-bootstrap-macos.sh
• dev-bootstrap-win.ps1

Each of those is aimed at going from 'nothing' to 'a running docker-compose website'. Documented in development_setup_notes.md.

You are right, after that initial step, continuing on, it could be consolidated and/or automated further. Importing releases for example.