PEP8 cleanups.

mayan/apps/checkouts/views.py

@@ -4,8 +4,7 @@ from django.contrib import messages
 from django.core.exceptions import PermissionDenied
 from django.core.urlresolvers import reverse
 from django.http import HttpResponseRedirect
-from django.shortcuts import get_object_or_404, render_to_response
-from django.template import RequestContext
+from django.shortcuts import get_object_or_404
 from django.utils.translation import ugettext_lazy as _
 
 from documents.models import Document
@@ -20,7 +19,6 @@ from permissions import Permission
 
 from .exceptions import DocumentAlreadyCheckedOut, DocumentNotCheckedOut
 from .forms import DocumentCheckoutForm, DocumentCheckoutDefailForm
-from .literals import STATE_LABELS
 from .models import DocumentCheckout
 from .permissions import (
     permission_document_checkin, permission_document_checkin_override,

mayan/apps/common/forms.py

@@ -6,7 +6,6 @@ from django import forms
 from django.conf import settings
 from django.contrib.auth import get_user_model
 from django.db import models
-from django.utils.html import escape
 from django.utils.translation import ugettext_lazy as _
 
 from .classes import Filter, Package

mayan/apps/common/utils.py

@@ -6,9 +6,7 @@ import tempfile
 import types
 
 from django.conf import settings
-from django.utils import formats
 from django.utils.datastructures import MultiValueDict
-from django.utils.encoding import force_text
 from django.utils.http import urlquote as django_urlquote
 from django.utils.http import urlencode as django_urlencode
 

mayan/apps/documents/views.py

@@ -8,7 +8,6 @@ from django.conf import settings
 from django.contrib import messages
 from django.core.exceptions import PermissionDenied
 from django.core.urlresolvers import resolve, reverse, reverse_lazy
-from django.template.defaultfilters import filesizeformat
 from django.http import HttpResponse, HttpResponseRedirect
 from django.shortcuts import render_to_response, get_object_or_404
 from django.template import RequestContext