Change oioioi~python3~Iccc870ed9b7da334713ab1e8265702edf49989d7, patchset 16
https://gerrit.sio2project.mimuw.edu.pl/3673
SIO-2426 Add django 2.1 support
Added optional positional obj parameter to InlineAdmin.
Added obligatory positional request parameter to authenticate.
Adapted FileInFiletracker to change File class.
Adjusted dependencies versions.
Added support to has_change_permission in get_form on admin sites.
Added has_changed_permission to requiring it model admins.
Fixed migration problems in sqlite test.
Adjusted date in tests to fit in 32bit timestamp.
TODO for me in further commit:
Review other model admins and check if they also need custon view permissions.
Change-Id: Iccc870ed9b7da334713ab1e8265702edf49989d7
https://gerrit.sio2project.mimuw.edu.pl/3672
SIO-2426Add django 2.1 supportAdded 1.11 compatible changes.
Change load staticfiles to load static in templates.
Removed use of django.utils.translation.string_concat().
Updated is_safe_url to new standard.
Change-Id: I9b451ebe22f4edad44a06c412bedb94611129bf0