[FIX] point_of_sale: fixed errors that avoid closing a pos session + [IMP] account: added back the account_id field on statement.line obj to ease the reconciliation process when importing statements (or creating them through pos.orders). Fix #932
Merge pull request #1268 from odoo-dev/8.0-pos-fixes-qdp

[FIX] point_of_sale: fixed errors that avoid closing a pos session + [IM...
Merge branch '8.0' of https://github.com/odoo/odoo into 8.0-win32