[IMP] configurable digits in floats per application

addons/account/account.py

addons/account/account_analytic_line.py

addons/account/account_move_line.py

addons/account/invoice.py

addons/account/wizard/wizard_pay_invoice.py

addons/account_tax_include/invoice_tax_incl.py

addons/decimal_precision/decimal_precision.py

addons/delivery/stock.py

addons/membership/membership.py

addons/mrp_repair/mrp_repair.py

addons/product/pricelist.py

addons/product/product_data.xml

addons/purchase/purchase.py

addons/purchase/purchase_unit_test.xml

addons/sale/sale.py

addons/stock/stock.py