Deleted Whitespaces
Whitespace Removal
Changed date format of return date (bugfix)
changed to version 2.3.1
apache commons validator update to 1.4.0
updated VALID_EMAIL
Trimming dashes
Added acceptance test for 13-digit validation.
Merged ISBN13 Digit validation branch into master.
Merging validate ISBN13 branch into master
Merge branch '2.4.0_wb-117_13digitISBN'

Conflicts:
	worblehat-acceptancetests/src/main/java/de/codecentric/psd/atdd/step/business/Library.java
	worblehat-acceptancetests/src/main/resources/de/codecentric/psd/atdd/stories/book/Add
Book.story
	worblehat-web/src/main/java/de/codecentric/psd/worblehat/web/validator/ValidateAddBook.java
	worblehat-web/src/main/java/de/codecentric/psd/worblehat/web/validator/ValidateBorrowBook.java
	worblehat-web/src/main/java/de/codecentric/psd/worblehat/web/validator/ValidateReturnAllBooks.java
	worblehat-web/src/test/java/de/codecentric/psd/worblehat/web/validator/ValidateAddBookTest.java
	worblehat-web/src/test/java/de/codecentric/psd/worblehat/web/validator/ValidateBorrowBookTest.java
	worblehat-web/src/test/java/de/codecentric/psd/worblehat/web/validator/ValidateReturnAllBooksTest.java
Merge branch 'master' of https://github.com/scrum-for-developers/2014-02-team-2.git
RELEAS 2.5.0
Implemented wb-127 uniqueISBN
CRLF problems
Merge conflicts