Added test db config vs produciton db config

README.md

build.gradle

src/main/java/de/dhbw/gallery/Application.java

src/main/java/de/dhbw/gallery/UserController.java

src/main/java/de/dhbw/gallery/UserRepository.java

src/main/java/de/dhbw/gallery/UserRepositoryImpl.java

src/main/java/de/dhbw/gallery/domain/User.java

src/main/resources/application.yml

src/main/resources/logback.xml

src/test/resources/application.yml

src/test/resources/logback.xml