* remove most of the utils:: and dev:: namespace usage
* rename `configure_db_source` to `configure_db_sources`
* use defaults from other table info objects (using the `..obj` syntax)
* use doc comments vs regular comment in a few places
* refactor server_test.rs to make it more readable and much shorter
* use a macro for identical code
* use a test_get() for identical GET request
* rename fn test_foo() into fn foo() for simplicity
Getting ready for multi-backend system, where each backend would have its own configuration.
All 3 config structs (clap args, config, and configbuilder) are now separated into 3 files - the main one, one for service (actix stuff), and one for PostgreSQL.
The files have been moved to `/pg` and `/srv`, but otherwise the logic should be mostly intact.
* remove all actions and other low-level magic code, making it more straightforward for the most common usage
* replace r2d2 with bb8 to make it all async
* use first significant version in cargo.toml - this makes it easier to maintain
This fixes#349
