hardened configuration

- moved env rewrite + dotenv code to single location
- fixed bug with system flag on user

services/env.js

@@ -0,0 +1,11 @@
+// Perform rewrites to the runtime environment variables based on the contents
+// of the process.env.REWRITE_ENV if it exists. This is done here as it is the
+// entrypoint for the entire applications configuration.
+require('env-rewrite').rewrite();
+
+if (process.env.NODE_ENV !== 'test') {
+
+  // Apply all the configuration provided in the .env file if it isn't already
+  // in the environment.
+  require('dotenv').config();
+}

services/mongoose.js

@@ -1,14 +1,14 @@
-const mongoose = require('mongoose');
-const debug = require('debug')('talk:db');
-const enabled = require('debug').enabled;
-const queryDebugger = require('debug')('talk:db:query');
-
 const {
   MONGO_URL,
   WEBPACK,
   CREATE_MONGO_INDEXES,
 } = require('../config');
 
+const mongoose = require('mongoose');
+const debug = require('debug')('talk:db');
+const enabled = require('debug').enabled;
+const queryDebugger = require('debug')('talk:db:query');
+
 // Loading the formatter from Mongoose:
 //
 // https://github.com/Automattic/mongoose/blob/1a93d1f4d12e441e17ddf451e96fbc5f6e8f54b8/lib/drivers/node-mongodb-native/collection.js#L182