Updated app_index.html

[ataylor32]

django-defender's app_index.html template is based on some old version of Django's app_index.html template. It's just like the one used in many versions of Django prior to 3.1 except that its indentation is different and it doesn't contain {% block bodyclass %}{{ block.super }} app-{{ app_label }}{% endblock %}. This has worked fine for anyone not relying on the bodyclass block being present. However, as of Django 4.2.1, the breadcrumbs are handled differently (compare Django 4.2's app_index.html template with Django 4.2.1's app_index.html template). Rather than trying to keep django-defender's app_index.html template in sync with Django's, it's probably better to just extend Django's.

[kencochrane]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a972dae) 92.78% compared to head (af29fa5) 92.78%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #238   +/-   ##
=======================================
  Coverage   92.78%   92.78%           
=======================================
  Files          13       13           
  Lines         416      416           
=======================================
  Hits          386      386           
  Misses         30       30           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.