GEM: ReferencePropertyEditorが表示タイプ「UNIQUE」かつ多重度=1の場合、削除ボタンが動作しない修正#1950

xkazama-yukio3 merged 3 commits intomasterdentsusoken/iPLAss:masterfrom

feature/1873-gem-single-reference-unique-deletedentsusoken/iPLAss:feature/1873-gem-single-reference-unique-deleteCopy head branch name to clipboard