not backward compatitible : refactor views, urls and templates organisation

newsbox/models.py

newsbox/templates/newsbox/detail.html

newsbox/templates/newsbox/inc/detail.html

newsbox/templates/newsbox/inc/list-item.html

newsbox/templates/newsbox/inc/list.html

newsbox/templates/newsbox/list.html

newsbox/templatetags/__init__.py

newsbox/templatetags/get_placeholder_content.py

newsbox/views.py

newsbox_cms/cms_plugins.py

newsbox_cms/templates/newsbox_cms/detail-cms.html

newsbox_cms/templates/newsbox_cms/inc/detail.html

newsbox_cms/templates/newsbox_cms/inc/list.html

newsbox_cms/templates/newsbox_cms/list-cms.html

newsbox_cms/templates/newsbox_cms/list-plugin.html

newsbox_cms/views.py

newsbox_i18n/views.py

tests/myapp/templates/base.html

tests/myapp/templates/myapp/news_detail.html

tests/myapp/templates/myapp/news_list.html