changed long to Long (wrapper) where needed
Merge branch 'master' of https://github.com/c15r/feedo.git
REST Workshop:
- All steps including 5b)   
- The BookController is renamed FeedController for our project.
- (!) it already has a dependency on ch.bfh.swos.feedo.service
Merge branch 'master' of https://github.com/c15r/feedo.git