Convert Configuration to YAML

[tOOlmaRR]

Actual: **

Let's start using YAML files for configuration. This will involve a couple things - see checklist below:

• [ ] Create a YAML files and hook it up to the app (test and prod)
• [ ] Extract and build YAML configs from old PHP config files
• [ ] Extract bootstrapping code from old PHP config files

[tOOlmaRR]

I don't see any benefit to doing this, so I'm just going to drop it.