Replace mklint with djlint (#4746)

* remove markuplint

* remove dedicated html step - will be done by pre-commit

* add djlint for django template linting

* Fix T003: Endblock should have name

* Fix H013: Img tag should have an alt attribute

* Fix H014: Found extra blank lines

* Fix T003: Endblock should have name

* Fix H013: Img tag should have an alt attribute

* small fixes

* Fix T001: Variables should be wrapped in a single whitespace

* Fix T003: Endblock should have name

* small fixes

* fix form method

* add entry to contributing

* fix template changes

* another fix

* use current version

InvenTree/templates/registration/logged_out.html

@@ -7,4 +7,4 @@
 
 <p><a href="{% url 'admin:index' %}">{% translate 'Log in again' %}</a></p>
 
-{% endblock %}
+{% endblock content %}