Add test section detail view
Add SectionDetailView
Add SectionDetailView
Add test get_absolute_url
Add get_absolute_url
Add get_absolute_method to Article model
Add test SectionCreateView
Add SectionCreateView
Add SectionCreateView
Add test SectionUpdateView
Add SectionUpdateView
Add SectionUpdateView
Add test get_update_url method
Add get_update_url method
Add get_update_url method in Section model
Add test_list_view
Add ArticleListView
Add ArticleListView
Add test_detail_view
Add ArticleDetailView