Add Support for Foreign Key Constraints#352

Martin-Alexander wants to merge 6 commits intoifad:masterifad/chronomodel:masterfrom

Martin-Alexander:bugfix/174-add-remove-foreign-key-does-not-work-on-temporal-tablesMartin-Alexander/chronomodel:bugfix/174-add-remove-foreign-key-does-not-work-on-temporal-tablesCopy head branch name to clipboard