FIX: Added null check in update
UPDATE: Added assertions to testAddNew and testUpdate, which work with maven (but not IDEA)
NEW: Added stub integration test for TimeSpanServiceImpl
UPDATE: Changed configurable annotation (removed dependencycheck)
UPDATE: Removed null check on repository in ProjectDAO.receiveCustomer()
UPDATE: Implemented basic TimeSpanService integration tests
FIX: Null checks in TimeSpanServiceImpl.java
FIX: Proper Null checking in Service implementations