add defaults

lib/settings-loader.js

@@ -40,8 +40,14 @@ function settings () {
   return settingsCache
 }
 
+function save (config) {
+  const sql = 'update user_config set data=$1 where type=$2'
+  return db.none(sql, [{config}, 'config'])
+}
+
 module.exports = {
   settings,
   loadConfig,
-  load
+  load,
+  save
 }