Update release notes, two minor style fixes

docs/source/releases/v0.7.rst

 * It is now possible to disable the redirect that happens when a product or
   category's slug changed and an old URL is used (`b920f8ba`_).
 
+* :class:`~oscar.apps.payment.forms.BankCardNumberField` now allows specifying
+  accepted card types (`32b7249`_).
+
 .. _`b920f8ba`: https://github.com/tangentlabs/django-oscar/commit/b920f8ba288cd2f19bb167db2a012479ba956397
 .. _`ef3ccf08a7`: https://github.com/tangentlabs/django-oscar/commit/ef3ccf08a707ae1250cdb8d5f2dc6f721d020dc4
+.. _`32b7249`: https://github.com/tangentlabs/django-oscar/commit/32b7249e44b40cb1b20d01226f77ae6777a20b91
 
 Bugfixes
 ~~~~~~~~

oscar/apps/dashboard/offers/views.py

 import datetime
 import json
 
-from django.views.generic import (ListView, FormView, DeleteView,
-                                  CreateView, UpdateView)
-from oscar.core.loading import get_model
+from django.views.generic import ListView, FormView, DeleteView
 from django.core.urlresolvers import reverse
 from django.contrib import messages
 from django.http import HttpResponseRedirect
 from django.core import serializers
 from django.core.serializers.json import DjangoJSONEncoder
 
-from oscar.core.loading import get_classes, get_class
+from oscar.core.loading import get_classes, get_class, get_model
 from oscar.views import sort_queryset
 
 ConditionalOffer = get_model('offer', 'ConditionalOffer')

oscar/static/oscar/less/page/layout.less

 }
 
 // Some padding for the inner container
-// Also usefull for the mobile
+// Also useful for mobile
 .page_inner {
     padding:@gridGutterWidth;
     .clearfix();