Add page identifier in img src for unicity
Add page identifier in img src for unicity

tehciolo/book-deutsch-i-vol1,bookrack/book-deutsch-ii-vol2,bookrack/book-deutsch-iii-vol2,tehciolo/book-deutsch-i-vol1,bookrack/book-deutsch-iii-vol2,bookrack/book-deutsch-ii-vol1,bookrack/book-deutsch-ii-vol1,bookrack/book-deutsch-ii-vol2