fix issues with catalog product create/detlete/update#1

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danrcoull wants to merge 4 commits intoCallino:magento2from

danrcoull:magento2

Commits on Dec 30, 2017

Commits on Jan 20, 2018

further catalog modifications
danrcoull
committed

Commits on Feb 1, 2018

catalog category changes
danrcoull
committed