generator-jhipster-30 Evaluate HazelCast instead of Ehcache

Sorry for the formatting. I use intellij. So if you can send me your code style, I will be able to apply it.

I added a new external library named http-auth-interceptor.js to help the session management. I also added a new method named authenticate in the AccountResource class to check if the customer is logged. Quicker than calling getAccount when the user is logged. Could be put in another class (TDB)

Have fun!