lint with black python. convert f style strings to old one. some small fixes

instances/apps.py

@@ -25,8 +25,8 @@ def apply_passwordless_console(sender, **kwargs):
     '''
     Apply new passwordless_console permission for all users
     '''
-    from django.contrib.auth.models import Permission
     from django.contrib.auth import get_user_model
+    from django.contrib.auth.models import Permission
     User = get_user_model()
     plan = kwargs.get('plan', [])
     for migration, rolled_back in plan:

instances/migrations/0001_initial.py

@@ -1,7 +1,6 @@
 # Generated by Django 2.2.10 on 2020-01-28 07:01
-
-from django.db import migrations, models
 import django.db.models.deletion
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):

instances/migrations/0006_addFlavors.py

@@ -32,4 +32,4 @@ class Migration(migrations.Migration):
 
     operations = [
         migrations.RunPython(add_flavors, del_flavors),
-    ]
+    ]

instances/templates/instances/snapshots_tab.html

@@ -19,7 +19,7 @@
         <div class="tab-content">
             <div role="tabpanel" class="tab-pane tab-pane-bordered active" id="takesnapshot">
                 {% if instance.status == 5 %}
-                    <p>{% trans "This may take more than an hour, depending on how much content is on your droplet and how large the disk is." %}</p>
+                    <p>{% trans "This may take more than an hour, depending on how much content is on your instance and how large the disk is." %}</p>
                     <form action="{% url 'instances:snapshot' instance.id %}" class="form-inline" method="post" role="form" aria-label="Create snapshot form">
                         {% csrf_token %}
                         <div class="form-group row">

instances/templatetags/tags_active.py

@@ -1,6 +1,7 @@
-from django import template
 import re
 
+from django import template
+
 register = template.Library()
 
 

instances/tests.py

@@ -8,12 +8,11 @@ from django.contrib.auth.models import Permission
 from django.http.response import Http404
 from django.shortcuts import reverse
 from django.test import TestCase
+from instances.views import instance
 from libvirt import VIR_DOMAIN_UNDEFINE_NVRAM
 from vrtManager.create import wvmCreate
 from vrtManager.util import randomUUID
 
-from instances.views import instance
-
 from .models import Flavor, Instance
 from .utils import refr