Update 'kitchensink-angularjs' quickstart to follow RESTful conventions

As it stands there are several endpoints in the kitchensink-angularjs quickstart which follow RESTful naming schemes and url structure, but which do not return responses in keeping with RESTful principles.

I would like to update the quickstart in following ways to address this:

• Update MemberResourceRESTService (http://git.io/1CyYUA) to:
• Return a status of 201 upon a successful call of createMember(Member member), and include the created resource in the response.
• Return a status of 500 upon catching a generic Exception in createMember(Member member) . User input validation is handled earlier, and a generic exception here would probably imply some unexpected behaviour, which would make a 500 error semantically appropriate.
• Update controllers.js, removing the now needless refresh() function. The created member will be returned as part of the result in the Member.save() call and can be added to $scope.members at that stage.
• Update RESTTest.java (http://git.io/zIFs4g) to reflect the changes to createMember(Member member) in MemberResourceRESTService.

If these changes seem sensible to you and you would appreciate a pull request, let me know.

Cheers