[ADD] Default value for supplierinfo.min_qty

And remove default value for function field "qty"
[FIX] shebang on Python
Merge pull request #348 from sve-odoo/patch-2

[ADD] Default value for product_supplierinfo.min_qty
Merge pull request #352 from xmo-odoo/command-shebang

[FIX] shebang on odoo.py