refactor Service tests, use populated test data

Signed-off-by: Markus Lamm <markus Lamm@googlemail.com>
Merge branch 'master' of github.com:markuslamm/urbanstreetart

Conflicts:
	urbanstreetart-core/src/main/java/net/urbanstreetart/core/service/AccountService.java
	urbanstreetart-core/src/main/java/net/urbanstreetart/core/service/internal/AccountServiceImpl.java
	urbanstreetart-core/src/main/java/net/urbanstreetart/core/service/internal/ProfileServiceImpl.java
	urbanstreetart-core/src/test/java/net/urbanstreetart/core/integration/service/AccountServiceIntegrationTest.java
	urbanstreetart-core/src/test/java/net/urbanstreetart/core/integration/service/ProfileServiceIntegrationTest.java
	urbanstreetart-core/src/test/java/net/urbanstreetart/core/integration/service/ShotServiceIntegrationTest.java

Signed-off-by: Markus Lamm <markus Lamm@googlemail.com>