[NEW] <sale_order_line_dates> extending standar <sale_order_dates>
[MOD] <sale_order_line_dates> working onchange
[MOD] <sale_order_line_dates> fixed pep8 error
Merge pull request #321 from oihane/8.0-sale_dates

[ADD] <sale_order_line_dates> extending standar <sale_order_dates>