Impacted versions:
master

Steps to reproduce:
On the video

Current behavior:
You have to write the name of the group only

Expected behavior:
Either Writing the code or the name of an Account Group fetch the record 

Video/Screenshot link (optional):
https://drive.google.com/file/d/0B1w9gokcJL9hVWpaMTdGQ3RlLTQ/view

import time
import math
from odoo.osv import expression
from odoo.tools.float_utils import float_round as round
from odoo.tools import DEFAULT_SERVER_DATETIME_FORMAT, pycompat
from odoo.exceptions import UserError, ValidationError
from odoo import api, fields, models, _
class AccountAccountType(models.Model):