Set sqlite as the default db driver

src/server/config/serverConfig.js

@@ -8,7 +8,7 @@ module.exports = {
 	// sqlite
 	// rethink
 	//eslint-disable-next-line no-process-env
-	db: process.env.IWD_DB || 'rethink',
+	db: process.env.IWD_DB || 'sqlite',
 	//eslint-disable-next-line no-process-env
 	dbHost: process.env.IWD_DB_HOST || 'localhost',
 	//eslint-disable-next-line no-process-env