pagekite: Fix first boot to use requests module

The intent is to use the requests module and make HTTP requests instead
of the Django requests.  This is probably a regression and this step
does not work without the change.

plinth/modules/pagekite/forms.py

@@ -18,12 +18,12 @@
 import copy
 from django import forms
 from django.contrib import messages
-from django.contrib.sites import requests
 from django.core import validators
 from django.core.exceptions import ValidationError
 from django.utils.translation import ugettext as _, ugettext_lazy
 import json
 import logging
+import requests
 
 from . import utils
 from plinth import cfg