[BUGFIX] Prevent duplicate attribute slug writes that break admin attribute saves#363

JKetelaar wants to merge 2 commits into

EmicoEcommerce:masterEmicoEcommerce/Magento2Tweakwise:masterfrom

JKetelaar:fix/attribute-slug-unique-constraintJKetelaar/Magento2Tweakwise:fix/attribute-slug-unique-constraintCopy head branch name to clipboard