+# code borrowed from django-registration
+# https://bitbucket.org/ubernostrum/django-registration/
+
+#DEPRECATED
+#class RegistrationManager(models.Manager):
+# """
+# Custom manager for the ``RegistrationProfile`` model.
+#
+# The methods defined here provide shortcuts for account creation
+# and activation (including generation and emailing of activation
+# keys), and for cleaning out expired inactive accounts.
+#
+# """
+# def activate_user(self, activation_key):
+# """
+# Validate an activation key and activate the corresponding
+# ``User`` if valid.
+#
+# If the key is valid and has not expired, return the ``User``
+# after activating.
+#
+# If the key is not valid or has expired, return ``False``.
+#
+# If the key is valid but the ``User`` is already active,
+# return ``False``.
+#
+# To prevent reactivation of an account which has been
+# deactivated by site administrators, the activation key is
+# reset to the string constant ``RegistrationProfile.ACTIVATED``
+# after successful activation.
+#
+# """
+# # Make sure the key we're trying conforms to the pattern of a
+# # SHA1 hash; if it doesn't, no point trying to look it up in
+# # the database.
+# if SHA1_RE.search(activation_key):
+# try:
+# profile = self.get(activation_key=activation_key)
+# except self.model.DoesNotExist:
+# return False
+# if not profile.activation_key_expired():
+# user = profile.user
+# user.is_active = True
+# user.save()
+# profile.activation_key = self.model.ACTIVATED
+# profile.save()
+# return user
+# return False
+#
+# def create_user(self, first_name, last_name, email, password):
+# pending_user = self.create(first_name=first_name, last_name=last_name, email=email, password=password)
+# return pending_user
+#
+# def create_inactive_user(self, first_name, last_name, email, password, site,
+# send_email=True):
+# """
+# Create a new, inactive ``User``, generate a
+# ``RegistrationProfile`` and email its activation key to the
+# ``User``, returning the new ``User``.
+#
+# By default, an activation email will be sent to the new
+# user. To disable this, pass ``send_email=False``.
+#
+# """
+# salt = hashlib.sha1(str(random.random())).hexdigest()[:5]
+# if isinstance(email, unicode):
+# email = email.encode('utf-8')
+# activation_key = hashlib.sha1(salt+email).hexdigest()
+#
+# new_user = PendingUser.objects.create_user(first_name, last_name, email, password)
+# new_user.is_active = False
+# new_user.activation_key=activation_key
+# new_user.save()
+#
+# # We might not need this
+# #registration_profile = self.create_profile(new_user)
+#
+# if send_email:
+# new_user.send_activation_email(site)
+# #registration_profile.send_activation_email(site)
+#
+# return new_user
+# create_inactive_user = transaction.commit_on_success(create_inactive_user)
+#
+# def create_profile(self, user):
+# """
+# Create a ``RegistrationProfile`` for a given
+# ``User``, and return the ``RegistrationProfile``.
+#
+# The activation key for the ``RegistrationProfile`` will be a
+# SHA1 hash, generated from a combination of the ``User``'s
+# username and a random salt.
+#
+# """
+# salt = hashlib.sha1(str(random.random())).hexdigest()[:5]
+# username = user.username
+# if isinstance(username, unicode):
+# username = username.encode('utf-8')
+# activation_key = hashlib.sha1(salt+username).hexdigest()
+# return self.create(user=user,
+# activation_key=activation_key)
+#
+# def delete_expired_users(self):
+# """
+# Remove expired instances of ``RegistrationProfile`` and their
+# associated ``User``s.
+#
+# Accounts to be deleted are identified by searching for
+# instances of ``RegistrationProfile`` with expired activation
+# keys, and then checking to see if their associated ``User``
+# instances have the field ``is_active`` set to ``False``; any
+# ``User`` who is both inactive and has an expired activation
+# key will be deleted.
+#
+# It is recommended that this method be executed regularly as
+# part of your routine site maintenance; this application
+# provides a custom management command which will call this
+# method, accessible as ``manage.py cleanupregistration``.
+#
+# Regularly clearing out accounts which have never been
+# activated serves two useful purposes:
+#
+# 1. It alleviates the ocasional need to reset a
+# ``RegistrationProfile`` and/or re-send an activation email
+# when a user does not receive or does not act upon the
+# initial activation email; since the account will be
+# deleted, the user will be able to simply re-register and
+# receive a new activation key.
+#
+# 2. It prevents the possibility of a malicious user registering
+# one or more accounts and never activating them (thus
+# denying the use of those usernames to anyone else); since
+# those accounts will be deleted, the usernames will become
+# available for use again.
+#
+# If you have a troublesome ``User`` and wish to disable their
+# account while keeping it in the database, simply delete the
+# associated ``RegistrationProfile``; an inactive ``User`` which
+# does not have an associated ``RegistrationProfile`` will not
+# be deleted.
+#
+# """
+# for profile in self.all():
+# try:
+# if profile.activation_key_expired():
+# user = profile.user
+# if not user.is_active:
+# user.delete()
+# profile.delete()
+# except User.DoesNotExist:
+# profile.delete()
+#DEPRECATED
+