feature improvements: default queue and collapse button

- Add title, level (critical/warning/info/plain), is_active, priority
  and created_when fields to Announcement
- Show all active announcements on the home page, ordered by priority
  (lowest first) then newest first
- Render critical, warning and info as red, yellow and blue Semantic UI
  messages with icons; render plain announcements as text without
  background or icon
- Style links in announcement text as bold and underlined, in the
  announcement's color
- Move announcement styles to announcements.styl
- Admin: show level badge, title, active flag and priority; add level
  and active filters and title/text search
- Add tests for active filtering, ordering, level rendering and hiding
  the box when there are no active announcements

Redesign home page announcements with levels, titles and priority

- skip_postgeneration_save = True added to UserFactory, CompetitionFactory, TaskFactory, PhaseFactory and SubmissionScoreFactory
- UserFactory super_user hook now saves the user
- CompetitionFactory collaborators hook now saves the competition after adding collaborators

Fixed factory_boy post-generation deprecation warnings in test factories

…n-admins

- ADMIN_ONLY_FIELDS replaced by Meta.public_fields and Meta.admin_fields; Meta.fields is built from both
- Non-admins now receive only the fields in public_fields
- enable_detailed_results, show_detailed_results_in_submission_panel, show_detailed_results_in_leaderboard, forum and forum_enabled are now visible to non-admins
- Tests updated: admins see all fields, non-admins see no admin fields; secret key checks removed

Competition detail serializer now uses a list of public fields for non-admins

… results are enabled

- SubmissionFilesSerializer.get_detailed_result returns None when the competition's enable_detailed_results is off
- Tests added for get_details with detailed results enabled and disabled

…_result_check

Submission `get_details` now returns detailed result only when detailed results are enabled

Version Bump

- Add download_many_prediction_results and download_many_scoring_results endpoints
- Rename download_many to download_many_submissions
- Share auth, validation and permission checks in _download_many_files
- Only include results of finished submissions, skipping missing or hidden files
- Prefix downloaded file names with sub_, pred_res or sco_res_
- Remove unreachable results loop
- Add prediction/scoring result options to the bulk action dropdown

Add bulk download of prediction and scoring results + cleaning

Minor UI change: Move and rename save button in task editor

…_fields

Add back competition detail fields for non-admins

Packages Upgrades

UI improvement for participant routing

#2614)

* Improve competition dump names and keep phase times

- Dump names now show the competition id, whether the dump has keys or files, and when it was created
- The downloaded zip file name now matches the dump name shown on the page
- Phase start and end dates in a dump now keep their time, not just the date

* Add competition title in dump name

---------

Co-authored-by: didayolo <adrien.pavao@gmail.com>

- Fix the storage URL examples to include the MinIO port
- Update the secure MinIO example to match docker-compose
- Add a section on configuring email
- Clarify that MinIO and storage credentials must match

Documentation - Update deployment documentation

Cleanup - removed duplicate code in `clients.js`

The get_filename method in SubmissionCreationSerializer crashes with
'NoneType' object has no attribute 'data_file' when a submission has
data=None (e.g. if a submission is created via API before the dataset
upload completes successfully).

This causes a 500 Internal Server Error on the competition detail page
for ALL users, not just the one who made the incomplete API call.

Apply the same null-check pattern already used in SubmissionListSerializer
(line 69-73 of the same file).

Fix AttributeError in SubmissionCreationSerializer when data is None