How to get MySQL database connected to Vaadin start.vaadin.com project

This tutorial mainly concentrates on how to wire your Vaadin web application to MySQL database so you can Create, Read, Update and Delete (CRUD) information in database via Vaadin web application. Idea is to show you how to connect a template downloaded from https://start.vaadin.com to a database so you can replicate it to your own needs. This is not about the best practices (for Vaadin, Spring or MySQL) but to get you started fast.