* Migration and enhancement of all modules involved in SEPA
* Remove duplicated files
* Check if payment mode is set in the propagation
* Clean files
* account_payment_sale_stock: Split for removing stock dependency on sale
* Remove old translations templates
* Reorder on folder structure
* Translation template files
* Translations to spanish
* Use sale_ok and purchase_ok instead of tweaking payment type
* Add sale_ok and purchase_ok filters in partner/sale/purchase form views
* Use widget=selection for payment_mode_id fields
* Update demo data
