fix linter errors

portal/admin.py

@@ -1,3 +1,3 @@
-from django.contrib import admin
+from django.contrib import admin  # noqa
 
 # Register your models here.

portal/models.py

@@ -1,3 +1,3 @@
-from django.db import models
+from django.db import models  # noqa
 
 # Create your models here.

portal/tests.py

@@ -1,3 +1,3 @@
-from django.test import TestCase
+from django.test import TestCase  # noqa
 
 # Create your tests here.

portal/views.py

@@ -1,6 +1,5 @@
 from django.shortcuts import render
 
-# Create your views here.
 
 def index(request):
     # do fancy stuff here maybe