fixes #123 db migration scripts missing columns.

[lauksas]

Description

• Added missing columns on up scripts
• updated dbs documentation
• updated model screenshot

Fixes # 123

Type of change

Please delete options that are not relevant.

• [X] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Intermediate change (work in progress)

How Has This Been Tested ?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [X] Server started in a brand new database
• [X] logged in using API calls

Checklist :

• [X] Performed a self-review of my own code
• [X] npm test passes on your machine
• [X] New tests added or existing tests modified to cover all changes
• [X] Code conforms with the style guide
• [X] API Documentation in code was updated

[shubhamp-sf]

Thanks for your contribution @lauksas. 🚀

[mariobustosjmz]

Hi there, seems like that you have missing user_tenants table to include delete_on...

@lauksas