Added functionality to return a single book
Merge branch 'master' into feature/WB-103

Conflicts:
	worblehat-web/src/main/java/de/codecentric/psd/worblehat/web/controller/UserBookListController.java
	worblehat-web/src/main/webapp/WEB-INF/views/userBookList.jsp
Merge branch 'master' into feature/WB-103

Conflicts:
	worblehat-domain/src/main/java/de/codecentric/psd/worblehat/domain/BookRepository.java
	worblehat-domain/src/main/java/de/codecentric/psd/worblehat/domain/StandardBookService.java
	worblehat-web/src/main/java/de/codecentric/psd/worblehat/web/controller/UserBookListController.java
changed changelog