adding possibility to update the informations of a book (title, etc.) and handle 'idBook' parameters in Slide urls to send back only the slides of a book (will replace BooksSlides)
#!/usr/bin/env python
import os
import sys
if __name__ == "__main__":
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "settings")
from django.core.management import execute_from_command_line
execute_from_command_line(sys.argv)