(t) models.User.is_authenticated() will be deprecated in Django 2.0

[FroggyFlox]

When run using the Python warning flag (thanks @phillxnet!, #2655), we see the following warning:

/opt/rockstor/src/rockstor/storageadmin/views/home.py:68: RemovedInDjango20Warning: Using user.is_authenticated() and user.is_anonymous() as a method is deprecated. Remove the parentheses to use it as an attribute.
  if request.user.is_authenticated():

Steps to reproduce

As this is used in our home, the easiest way to trigger this warning is to "fully refresh" any webpage. For instance, go to system>users and press Ctrl + Shift + R.

Information

The warning itself is very clear and provides the solution. For background, we can have a look at the docs:
https://docs.djangoproject.com/en/1.11/ref/contrib/auth/#django.contrib.auth.models.User.is_authenticated

is_authenticated¶

Read-only attribute which is always True (as opposed to AnonymousUser.is_authenticated which is always False). This is a way to tell if the user has been authenticated. This does not imply any permissions and doesn’t check if the user is active or has a valid session. Even though normally you will check this attribute on request.user to find out whether it has been populated by the AuthenticationMiddleware (representing the currently logged-in user), you should know this attribute is True for any User instance.

Changed in Django 1.10:

In older versions, this was a method. Backwards-compatibility support for using it as a method will be removed in Django 2.0.

Our use

As per the log file, our only use of this now-attribute (was method) is in home.py:

buildvm155:/opt/rockstor # grep -r --include "*.py" "is_authenticated" src/rockstor/
src/rockstor/storageadmin/views/home.py:    if request.user.is_authenticated:

[phillxnet]

Closing as:
Fixed by #2665