Revert django-bootstrap4 update and related js dependencies

AKPlanning/settings.py

requirements.txt

static_common/common/vendor/bootstrap/bootstrap-4.3.1.min.js

static_common/common/vendor/bootstrap/bootstrap-4.6.0.js

static_common/common/vendor/bootstrap/bootstrap-4.6.0.min.js

static_common/common/vendor/jquery/jquery-3.3.1.min.js

static_common/common/vendor/jquery/jquery-3.3.1.slim.min.js

static_common/common/vendor/jquery/jquery-3.5.1.js

static_common/common/vendor/jquery/jquery-3.5.1.min.js

static_common/common/vendor/jquery/jquery-3.5.1.slim.js

static_common/common/vendor/jquery/jquery-3.5.1.slim.min.js

static_common/common/vendor/popper/popper-1.14.7.min.js