Enable, investigate hot deployment enabling for jetty (now hot deployment is not always working)

[czp13]

In some cases it is working in some cases it is not. Investigate and document potentially it if not trivial to fix it, how to enable hot deployment or hot code change:

Potentially this can work:

• https://stackoverflow.com/questions/2369851/hot-deploy-in-embedded-jetty

[Legioth]

What about using Spring Boot instead? :)

[czp13]

@Legioth: It would make sense :), thanks for the recommendation and idea.

Although as we discussed on today's daily before the tight deadline we would not add a fat dependency like Spring boot. Also, the addon was copied from the addon template as far as I know:

• https://github.com/vaadin/npm-addon-template/

So following those conventions, I am definitely up for adding later on the Spring boot as this addon/repository becomes more complex with more and more examples and bigger API here.

[czp13]

Closing as it was merged to master.