Revert django-bootstrap4 update and related js dependencies to fix availability issues

Closes #122

See merge request !101

This reverts commit 1e7ca6bf and parts of other commits

AK Slides

See merge request !87

Introduce CSP and update js dependencies accordingly

See merge request !98

Introduce result presentation mode for slides and allow to specify mode and num of next AKs via GET params

The export now allows to optional params, ?presentation_mode (without args) and ?num_next=<int> (default 3)

Additionally, change slide ratio to 16:9

Additionally, this provides better escaping of user content
Set setting for consecutive runs to 2

Create template for slides
Add view
Link view from status page
Update translations

Also use this representation in durations list of AK

Load dependency
Use custom escaping environment
Adapt installation guidelines

Set content security policy for frame-ancestors to "*" for this view

Add django-csp to dependencies
Load middleware
Add config that matches current usage but with most possible restriction

This is necessary since django-bootstrap4 expects a bootstrap javascript version that already includes popper
Bump jquery to 3.5.1
Bump bootstrap to 4.6.0
Remove separate popper lib
Adjust paths in settings. This also makes sure that the local jquery version is always used, which was previously not the case for admin views that depended on code.jquery.com
Remove explicit popper loading that was introduced in 2c359090 to mitigate the effects of the update in c0b3478c

Fix displayed duration for slots

See merge request kif/akplanning!97

Previously, a slot duration of exactly one hour was shown as "1: 0" instead of "1:00"

Fix several javascript issues

Closes #121

See merge request kif/akplanning!96

Make sure popper frontend dependency is always loaded before bootstrap script files load
This fixes #121 as well as issues in admin interface (scheduling and track management)
Make track management javascript more robust (this resolves an issue occurring when moving an AK with track back to list of AKs without tracks)

Improve admin (faster loading, restriction of foreign key & m2m choices)

Closes #106

See merge request kif/akplanning!94

Benjamin Hättasch authored 3 years ago and Nadja Geisler committed 3 years ago

Restrict choices (foreign keys & m2m) in admin forms to other objects of the event of the edited instance

Additionally, improve how requirements are shown for AK admin (multiple checkboxes instead of multiselect widget)

Benjamin Hättasch authored 3 years ago and Nadja Geisler committed 3 years ago

This reduces the amount of queries from over 450 for a full list (100 entries) to about 50, resulting in a drop of execution time from about 20 seconds to less than one second
This fixes #106

Wizard for event creation and configuration

Closes #88

See merge request kif/akplanning!88

The wizard is used instead of the normal built-in creation workflow
It consists of multiple steps to specify the most fundamental settings (especially the timezone), further settings, copying AKCategories and AKRequirements from existing events and activating the event once the basic configuration is done
The steps after the creation (first two steps) can be skipped

Update timezone-field and add pytz to requirements, add matching migration

See merge request kif/akplanning!93

Previously, the version of pytz was not fixed. This could lead to problems when the list of timezones of the locally installed version of pytz differed from the list fixed in migration 0027 of AKModel. This commit therefore:
* updates django-timezone-field to the newest version
* Adds pytz with the current version to requirements.txt
* Introduces a migration to reflect the changes in the internal timezone list of pytz (--('America/Godthab', 'GMT-03:00 America/Godthab'), ++('America/Nuuk', 'GMT-03:00 America/Nuuk'), --('Australia/Currie', 'GMT+11:00 Australia/Currie'))