def deleteUser(self):
				
		# We first have to remove the user's image from the blobstore, the Moodstocks DB and his reference in the Datastore
		image = self.user.imageRef
		if(image):
			imageID = str(image.key().id())
			
			# We delete the image from Moodstocks DB
			moodstocksHandler = Moodstocks()
			moodstocksHandler.deleteObject(imageID)
			
			# We delete the image in the blobstore
			blobInfo = image.blobKey
			blobKey = blobInfo.key()
			blobstore.delete(blobKey)
			
			# We can now remove the image reference
			image.delete() 
		
		# We first remove the vcard
		vcard = self.user.vcardRef
		if(vcard):
			vcard.delete()
		
		self.user.delete()
		logging.info("User has been removed from Captur.io")
		path = os.path.join(os.path.dirname(__file__), 'templates/delete/information_removed.html')
		self.response.out.write(template.render(path, None))
	def saveUsertemp(self):
		# We determine first if some user information was already in the database
		user_query = User.all().filter("mail", self.usertemp.mail)
		existingUser = user_query.get()
		
		if(existingUser):
			user = existingUser
			user.label =  self.usertemp.label
			oldVcardRef = user.vcardRef
			oldImageRef= user.imageRef
			if(oldImageRef):
				oldImageRefID = str(oldImageRef.key().id())
			logging.info("User found: %s, %s" % (user.label, user.mail))
		else:
			user = User()
			oldVcardRef = None
			oldImageRef = None
			user.label =  self.usertemp.label
			user.mail = self.usertemp.mail
				
		if(self.usertemp.imageRef):
			# We replace the old image Ref/ (or if not found) add the new image Ref
			user.imageRef = self.usertemp.imageRef
			
			# If there was an old image ref, we have to delete the image in the blobstore, in the Moodstocks DB and the reference in the Datastore
			if(oldImageRef):
				
				# We delete the image from Moodstocks DB
				moodstocksHandler = Moodstocks()
				moodstocksHandler.deleteObject(oldImageRefID)
				
				# We delete the image in the blobstore
				blobInfo = oldImageRef.blobKey
				oldBlobKey = blobInfo.key()
				blobstore.delete(oldBlobKey)
				
				# We delete the existing image Ref
				oldImageRef.delete()
						
		if(self.usertemp.vcardRef):
			# We replace the old vcard Ref/ (or if not found) by the new vcard Ref
			user.vcardRef = self.usertemp.vcardRef
			
			# If there was an old vcard ref, we have to delete it from to datastore
			if(oldVcardRef):
				oldVcardRef.delete()

		user.put()
		self.usertemp.delete()
		
		path = None
		if(user.imageRef):
			if(user.vcardRef):
				path = os.path.join(os.path.dirname(__file__), 'templates/post/all_set.html')
			else:
				path = os.path.join(os.path.dirname(__file__), 'templates/post/almost_set_vcard_missing.html')
		else:
			path = os.path.join(os.path.dirname(__file__), 'templates/post/almost_set_image_missing.html')
		
		self.response.out.write(template.render(path, None))