Changed GroupId to io.crowdcode.scrumr
Merge branch 'jat-berlin-1'

* jat-berlin-1:
  Start implementing TaskService
  Test to persist all objects bei cascading
  Enhanced Domain Model
  Enhanced AbstractEntity to auto generate UUID before persist an entity.
  Added new Exceptions
  Added TaskDto
  Refactoring: Moved ProjectService back into ejb module
  Add first unit test for TaskService
  Code Cleanup
fixed pom.xml
removed obsolete interface
Add an ApplicationException if project id is unknown.
Enhanced ProjectDao
Enhanced Business Logic and Tests.