Fix issue #122 : Add resolver for JPA exceptions to resthub-jpa

[bmeurant]

I am not convinced that we must implement this in resthub-jpa artifact and then have to systematically include spring-mvc as dependency of resthub-jpa : what a bout a jar exe project ?

In fact I am convinced of the fact that I disagree :-)

[sdeleuze]

You should notice the true in pom.xml, it is just used for compilation and does not add springmvc dependency.

The only other solution is to add hibernate as an optional dependency to resthub-web-server with the same principle. I prefer the solution proposed in my pull request.

Knowing that, I am sure you will agree, isn't it ? ;-)

[bmeurant]

Ok. I didn't see the optional parameter ... Nevertheless, I think I would prefer adding an optional dependency to jpa/hibernate in resthub-web-server to not break encapsulation principles and layers architectures and dependencies