Remove jsonwebtoken dependency

server/libs/jsonwebtoken/lib/JsonWebTokenError.js

@@ -0,0 +1,14 @@
+var JsonWebTokenError = function (message, error) {
+  Error.call(this, message);
+  if(Error.captureStackTrace) {
+    Error.captureStackTrace(this, this.constructor);
+  }
+  this.name = 'JsonWebTokenError';
+  this.message = message;
+  if (error) this.inner = error;
+};
+
+JsonWebTokenError.prototype = Object.create(Error.prototype);
+JsonWebTokenError.prototype.constructor = JsonWebTokenError;
+
+module.exports = JsonWebTokenError;

server/libs/jsonwebtoken/lib/NotBeforeError.js

@@ -0,0 +1,13 @@
+var JsonWebTokenError = require('./JsonWebTokenError');
+
+var NotBeforeError = function (message, date) {
+  JsonWebTokenError.call(this, message);
+  this.name = 'NotBeforeError';
+  this.date = date;
+};
+
+NotBeforeError.prototype = Object.create(JsonWebTokenError.prototype);
+
+NotBeforeError.prototype.constructor = NotBeforeError;
+
+module.exports = NotBeforeError;

server/libs/jsonwebtoken/lib/TokenExpiredError.js

@@ -0,0 +1,13 @@
+var JsonWebTokenError = require('./JsonWebTokenError');
+
+var TokenExpiredError = function (message, expiredAt) {
+  JsonWebTokenError.call(this, message);
+  this.name = 'TokenExpiredError';
+  this.expiredAt = expiredAt;
+};
+
+TokenExpiredError.prototype = Object.create(JsonWebTokenError.prototype);
+
+TokenExpiredError.prototype.constructor = TokenExpiredError;
+
+module.exports = TokenExpiredError;

server/libs/jsonwebtoken/lib/timespan.js

@@ -0,0 +1,18 @@
+var ms = require('../../ms');
+
+module.exports = function (time, iat) {
+  var timestamp = iat || Math.floor(Date.now() / 1000);
+
+  if (typeof time === 'string') {
+    var milliseconds = ms(time);
+    if (typeof milliseconds === 'undefined') {
+      return;
+    }
+    return Math.floor(timestamp + milliseconds / 1000);
+  } else if (typeof time === 'number') {
+    return timestamp + time;
+  } else {
+    return;
+  }
+
+};