Add ngCacheBuster

Use ngCacheBuster to avoid IE to cache api request to /rest/*
Merge pull request #781 from atomfrede/cache-buster

Add ngCacheBuster
Add ability to create multiple user roles from the app generator
Add default serialVersionUID
Generate DTOs for updating the entity, and a mapper to handle.
Minor customizations to better follow my habits
Fix some yo version problem
Remove unused hibernate_sequence tables