- create view hostingpackages.views.CustomerHostingPackageList to display a
specific customer's hosting packages
- add docstring to view AllCustomerHostingPackageList
- add URL pattern 'hosting_packages' to hostingpackages.urls
- restructure hostingpackages URL patterns to remove useless parts
- add template hostingpackages/customerhostingpackage_list.html
- change links in template base.html to link to 'hosting_packages'
