Skeleton for Artifacts and Detail entities
LAPPS-30
- AppDetailEntity
- AppDetailTypeEntity
- AppDetailTypeFacade
- resp. changes in AppFacadeTest
LAPPS-30 AppArtifact and ArtifactType added
Merge remote-tracking branch 'origin/app_domain_model' into
app_domain_model

Conflicts:
	LAPPS-backend/src/main/java/de/rwth/dbis/layers/lapps/entity/AppEntity.java
	LAPPS-backend/src/main/resources/META-INF/persistence.xml
	LAPPS-backend/src/test/java/de/rwth/dbis/layers/lapps/domain/AppFacadeTest.java
	LAPPS-backend/src/test/resources/META-INF/persistence.xml
LAPPS-30
 - app artifact in test case
Delete npm-debug.log

..is already in gitignore on the frontend branch now, will be in the develop branches' gitignore shorly anyways:-)
LAPPS-30
- new tests
- findByName in AppFacade
Merge remote-tracking branch 'origin/app_domain_model' into app_domain_model
Merge pull request #44 from learning-layers/app_domain_model

App domain model