Adding ERD for MET DB (#1920)

* updates on engagement publish

* update email template

* adding action drop down

* updated changes for User Management

* access user details page for users without a role

* updating variable name

* updating the schema

* updating as per review comments

* updating schema

* adding changes for clone and delete

* fixing linting

* update

* fix for report setting on analytics

* fixing lint

* Adding ERD for MET DB

* updated