WIP: 2021 02 24 dockerize (#18)

* Use cache for most fields and admin form for m2m files

* MR comments/clean up

* Cache should obey exclude and fields

* Some more tests and docs

* Only use cache for image files

* Even more tests and handle save as new

* fix test

* More tests

* minor refactor

* Improve test coverage

* Adding tests for fieldsets

* Added cache timeout

* Added another test for an edge case

* Fix issue with ManagementForm tampered with

* Update cache to only set when form is_multipart

* Even more testing changes

* Dockerize

* Setting up tests in docker

* Update github actions

* Got first integration test to work

* Refactor a bit

* Fix github action yml

* Use docker-compose up -d in github actions

* combine coveralls

* Updated readme

* Clean up code

* Remove dup code from rebase

Co-authored-by: Thu Trang Pham <thu@joinmodernhealth.com>

admin_confirm/templates/admin/change_confirmation.html

@@ -48,7 +48,7 @@
         </div>
         {% if is_popup %}<input type="hidden" name="{{ is_popup_var }}" value="1">{% endif %}
         {% if to_field %}<input type="hidden" name="{{ to_field_var }}" value="{{ to_field }}">{% endif %}
-        {% if form.is_multipart %}<input type="hidden" name=CONFIRMATION_RECEIVED value="True">{% endif %}
+        {% if form.is_multipart %}<input type="hidden" name="_confirmation_received" value="True">{% endif %}
         <div class="submit-row">
             <input type="submit" value="{% trans 'Yes, I’m sure' %}" name="{{ submit_name }}">
             <p class="deletelink-box">