[ADD] add sale multi journal
[CLEAN] clean pep8
[FIX] add sale_view in __openerp__.py
[IMP] switch module name -> sale_journal_shop
[FIX] delete unused strings
[ADD] sale_journal_shop: It's allow to have one journal per shop.
It's usefull for customer who sale in multi channel mode (amazon, ebay, magento, prestashop, pos, ....).
Each shop can be linked to his own journal and so his own invoice sequences
Merge branch 'bzr/sale-wkfl-7.0'