Refactor configuration

- No longer use config npm package
- Prefer config from env vars, though still has support for config file
- No longer writes a config file for database config
- Writes keys to a new file in /data folder
- Removes a lot of cruft and improves config understanding

backend/app.js

@@ -2,6 +2,7 @@ const express     = require('express');
 const bodyParser  = require('body-parser');
 const fileUpload  = require('express-fileupload');
 const compression = require('compression');
+const config      = require('./lib/config');
 const log         = require('./logger').express;
 
 /**
@@ -24,7 +25,7 @@ app.enable('trust proxy', ['loopback', 'linklocal', 'uniquelocal']);
 app.enable('strict routing');
 
 // pretty print JSON when not live
-if (process.env.NODE_ENV !== 'production') {
+if (config.debug()) {
 	app.set('json spaces', 2);
 }
 
@@ -65,7 +66,7 @@ app.use(function (err, req, res, next) {
 		}
 	};
 
-	if (process.env.NODE_ENV === 'development' || (req.baseUrl + req.path).includes('nginx/certificates')) {
+	if (config.debug() || (req.baseUrl + req.path).includes('nginx/certificates')) {
 		payload.debug = {
 			stack:    typeof err.stack !== 'undefined' && err.stack ? err.stack.split('\n') : null,
 			previous: err.previous
@@ -74,7 +75,7 @@ app.use(function (err, req, res, next) {
 
 	// Not every error is worth logging - but this is good for now until it gets annoying.
 	if (typeof err.stack !== 'undefined' && err.stack) {
-		if (process.env.NODE_ENV === 'development' || process.env.DEBUG) {
+		if (config.debug()) {
 			log.debug(err.stack);
 		} else if (typeof err.public == 'undefined' || !err.public) {
 			log.warn(err.message);