[FIX] purchase: minmum purchase quantity and float precision (opw 610557)
[FIX] product: name_search handles negative operators
[FIX] account: remove orphan analytic lines

If the analytic account is not present on an entry, still removes the Analytic Journal Items linked to it.
Fixes #1194, opw 610784
[FIX] account: avoid closing fiscalyear with unpost entries

As when closing fiscal periods, forbid to close a fiscal year with unposted entries.
Fixes #1194, opw 610784
[IMP] product: name_get matching on commercial_partner_id for suppliers