Simplified configuration

This is a breaking change that moves from dev/ref/prod-style configuration files to:

• commonSettings
• serverSettings
• browserSettings
• .env that contains secrets and overrides

We should now be able to have all dev configuration checked in with the code and only require an absolute minimum of settings in .env to start an application. For a basic node-api app nothing will need to be added provided mongo and redis is run on default ports. For a basic node-web app we will only need to add ldap username and password.