[REF] removed duplicated _ before method name
[IMP] delivery,stock,mrp: minor cleanup/spellchecking/nit-picking while reviewing
[REF] mrp: moving some data updating in .XML file instead of having a new .YML file for it
[FIX] procurement.rule._get_action() needs to be translatable
[FIX] mrp: wrong field set when copying move