adapted code for new version of django two-factor-auth package that comes with breaking changes. see https://github.com/jazzband/django-two-factor-auth/releases/tag/1.14.0

from CVE-2023-31047 In order to avoid the vulnerability, ClearableFileInput and FileInput form widgets now raise ValueError when the multiple HTML attribute is set on them. To prevent the exception and keep the old behavior, set allow_multiple_selected to True. https://docs.djangoproject.com/en/4.2/releases/3.2.19/

See https://docs.djangoproject.com/en/3.2/topics/http/file-uploads/#uploading-multiple-files

remove usage of lcsb pypi repo from Dockerfile

See merge request !439

update pypi repo url

See merge request !438

changed rockylinux tag to rockylinux:8

See merge request !437

fixes issue #519 , enables adding phone number to subject columns

Closes #519

See merge request !432

fixes #520 , adds worker assigned (if any) to the tooltip information in appointment calendar

Closes #520

See merge request !434

this changes prevents trying to replace placeholders not used in the file....

See merge request !431

Fix/502 - vouchers hours can be negative value

Closes #502

See merge request !435

Fix/513 - change import on export

Closes #513

See merge request !436