Import and PEP8 cleanups

apps/installation/views.py

@@ -3,7 +3,6 @@ from __future__ import absolute_import
 from django.shortcuts import render_to_response
 from django.template import RequestContext
 from django.utils.translation import ugettext_lazy as _
-from django.core.exceptions import PermissionDenied
 
 from permissions.models import Permission
 
@@ -15,11 +14,11 @@ def installation_details(request):
     Permission.objects.check_permissions(request.user, [PERMISSION_INSTALLATION_DETAILS])
 
     paragraphs = []
-    
+
     for name, instance in Installation().get_properties().items():
         paragraphs.append('%s: %s' % (unicode(instance.label), instance.value))
-        
+
     return render_to_response('generic_template.html', {
         'paragraphs': paragraphs,
         'title': _(u'Installation environment details')
-    }, context_instance=RequestContext(request))   
+    }, context_instance=RequestContext(request))