switching to eslint for code checking

most rules degraded to WARN, so we don't go insane. This will
change over time. The aim is to conform to a common style

Signed-off-by: Claudius Coenen <opensource@amenthes.de>

lib/models/user.js

@@ -50,7 +50,7 @@ module.exports = function (sequelize, DataTypes) {
   }, {
     instanceMethods: {
       verifyPassword: function (attempt) {
-        if (scrypt.verifyKdfSync(new Buffer(this.password, 'hex'), attempt)) {
+        if (scrypt.verifyKdfSync(Buffer.from(this.password, 'hex'), attempt)) {
           return this
         } else {
           return false