implement hosting package option choice view

- implement new hostingpackages.views.HostingOptionChoices
- add URL pattern 'hosting_option_choices' to hostingpackages.urls
- add template hostingpackages/customerhostingpackage_option_choices.html
- link from hostingpackages/customerhostingpackage_detail.html to
  'hosting_package_choices'

gnuviechadmin/hostingpackages/urls.py

@@ -8,9 +8,10 @@ from django.conf.urls import patterns, url
 
 from .views import (
     AllCustomerHostingPackageList,
-    CreateHostingPackage,
     CreateCustomerHostingPackage,
+    CreateHostingPackage,
     CustomerHostingPackageDetails,
+    HostingOptionChoices,
 )
 
 
@@ -27,4 +28,7 @@ urlpatterns = patterns(
     url(r'^allpackages/',
         AllCustomerHostingPackageList.as_view(),
         name='all_hosting_packages'),
+    url(r'^(?P<pk>\d+)/option-choices$',
+        HostingOptionChoices.as_view(),
+        name='hosting_option_choices'),
 )