Add jwt crypto module, support unit test for config module

Signed-off-by:  Asai Neko<sugar@sne.moe>

data/user.go

@@ -21,6 +21,13 @@ func (self *User) GetByEmail(email string) error {
 	return nil
 }
 
+func (self *User) GetByUserId(userId string) error {
+	if err := Database.Where("user_id = ?", userId).First(&self).Error; err != nil {
+		return err
+	}
+	return nil
+}
+
 func (self *User) SetCheckinState(email string, state bool) error {
 	if err := Database.Where("email = ?", email).First(&self).Error; err != nil {
 		return err