[Backport] Handle empty or incorrect lines in a language CSV#15287

magento-engcom-team merged 2 commits intomagento:2.1-developmagento/magento2:2.1-developfrom

VitaliyBoyko:12304-Handle-empty-incorrect-lines-in-a-language-CSVVitaliyBoyko/magento2:12304-Handle-empty-incorrect-lines-in-a-language-CSVCopy head branch name to clipboard