[FIX]Fixed the issue of recurrent rule, there is no need of passing 'Z' after end_date as end_date converted to UNTIL parameter in rrule, and date given in UNTIL is not converted to any other timezone until you specifically passed timezone difference or timezone name like 20130620T121012+3:30 or 20130620T121012TZOFFSET, currently Z creates issue when recurrent rule is created with end_date, TypeError: can't compare offset-naive and offset-aware datetimes.
[FIX]Added the refernce of the supplier in price_get method while creating purchase order from purchase requisition, as without supplier the price unit in PO was 0 when the pricelist item was based on Supplier Price in the product form
Remove old FR VAT taxes 19.6% and 7.0%.
Remove the FR VAT tax 5.0% that has never seen the light !
[FIX] sale: make invoice for SO grouped by partner based on partner_invoice_id instead of just partner_id

For two sale order, if the partner_id were different but the partner_invoice_id were identical, the make invoice grouped by partner created two different invoices
[MERGE] l10n_fr: remove obsolete French taxes, following 2014 rate update, courtesy of Alexis de Lattre (Akretion)
[MERGE] [FIX] purchase_requisition: when getting the price based on the pricelist for a supplier, pass the missing supplier id (useful for pricelist based on supplier price) (opw 601890)
[FIX] project: on project template duplication, keep original tasks stages
[MERGE] [FIX] base_calendar: do not add offset symbol to end_date when computing rrule

Fix issue when recurrent event (repeat until specified date) with reminder, would fail comparing naive and offset-aware datetimes