MVC Sales app for Course

Code practice for C# course on Udemy.

Original repo: https://github.com/acenelio/workshop-asp-net-core-mvc

Top changes made from the original project during the practice:

1. Used open-source PostgreSQL instead of MS SQL Server
2. Update all frameworks used for the most recent version
3. Update Bootstrap version and tags used and applied a theme

Techs apllied to the solution

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