Upgrade to hibernate 5

[asolntsev]

based on another PR https://github.com/ninjaframework/ninja/pull/708 (branch upgrade-dependencies).

[raphaelbauer]

Just fyi: Mid-Term Hibernate should no longer be part of Ninja, but of Ninja-Db. Ninja-Db living here: https://github.com/ninjaframework/ninja-db . It already got support for jdbi, and you could use that as boilerplate to add Hibernate...

[asolntsev]

@raphaelbauer Wow, I didn't know that, thanks. But shouldn't we remove Hibernate dependency from https://github.com/ninjaframework/ninja then?

[raphaelbauer]

That was roughly the plan for Ninja 7. Making it a lot smaller. We could then also remote Flyway and all db related dependencies from the core...

[raphaelbauer]

Let me know if we can help in any way :)