implement website deletion

- implement websites.views.DeleteWebsite
- add URL pattern 'delete_website' to websites.urls
- add template website_confirm_delete.html
- add link from hostingpackage page to 'delete_website'
- add changelog entry

gnuviechadmin/websites/urls.py

@@ -8,6 +8,7 @@ from django.conf.urls import patterns, url
 
 from .views import (
     AddWebsite,
+    DeleteWebsite,
 )
 
 
@@ -15,4 +16,6 @@ urlpatterns = patterns(
     '',
     url(r'^(?P<package>\d+)/(?P<domain>[\w0-9.-]+)/create$',
         AddWebsite.as_view(), name='add_website'),
+    url(r'^(?P<package>\d+)/(?P<domain>[\w0-9.-]+)/(?P<pk>\d+)/delete$',
+        DeleteWebsite.as_view(), name='delete_website'),
 )