Also add OrderingMixin for ordering.
And update ordering template.
Changed files in commit
changed: README.md
changed: devapp/templates/devapp/devices.html
changed: devapp/urls.py
changed: devapp/views.py
changed: djing/global_base_views.py
new file: docs/img/pagination.png
new file: docs/views.md
changed: mydefs.py
new file: templates/toolbar_page_cbv.html