* Upgrade Django to 3.0 and other dependencies to recent versions
* Fix otp version contsraint
* Remove six dependency
* Resolve some warnings
* Fix failing tests
* Update django-countries
* Resolve all RemovedInDjango31Warnings in test suite
* Run isort
* Fix import
* Update PostgreSQL version on travis
* PoC for ItemMetaProperties/Values
* Missing is_valid
* ItemMetaProperties/Values in editable via API, cloneable
* Tests
* Add Docs
* Fix import order
* Fix another import sorting...
* Typeahead for ItemMetaValues
* Test for editing event-objects
* Fix typeahead permission checks
* Further access restriction
Co-authored-by: Raphael Michel <mail@raphaelmichel.de>
* Reordering questions with drag'n'drop
* Add permission check
* Test permissions for question reordering
* Handle malformed requests for question reordering
* Show first up arrow and last down arrow
* Provide page offset
* Revert "Provide page offset"
This reverts commit 8090bd573f.
* Reorder questions endpoint with pagination support
* Rudimentary test for reordering endpoint
* Make reordering questions atomic
* cache questions
* Properly support pagination for reorder_questions
* appease linter
* Fix test
* First tabs
* Convert more pages
* Convert question page
* Item form
* Add item_formsets signal
* Revert "Add new signal nav_item"
This reverts commit 1ce613ff89.
* Formset is a word!
* Upgrade django and stuff
* Update to Django 2.2 and recent versions of similar packages
* Provide explicit orderings to all models used in paginated queries
* Resolve naive datetime warnings in test suite
* Deal with deprecation warnings
* Fix sqlparse version
* Data model + Editor
* Cart and order management
* Rebase migrations
* Fix typos, add tests on cart handling
* Add tests for checkout and quotas
* Add API endpoints
* Validation of settings
* Front page tax display
* Voucher handling
* Widget foo
* Show correct net pricing
* Front page tests
* reverse charge foo
* Allow to require bundling
* Fix test failure on postgres
- [x] Data model
- [x] Enforce constraint
- [x] Filter order list
- [x] Set channel on created order
- [x] Products API
- [x] Order API
- [x] Tests
- [x] Filter reports
- [x] Resellers
- [ ] deploy plugins
- [ ] posbackend
- [ ] resellers
- [ ] reports
- [x] Ticketlayouts
- [x] Support in pretixPOS
* add position field
* add question option sorting logic
* add meta class to question option for sorting
* regenerate migration
* add template content and view mechanics
* Rename migration after rebase & update dependency
* [WIP] add date/time question type
* Date/time questions python classes, types and form handling
* use own timepicker
* Fix argument naming
* Add css and js for datetimepickers
* remove not needed str call
* seperate splitdatetime widget template and fix date/time questions
* change date placeholder to dec 31
* do not show seconds in presale time pickers
* improve codestyle
* add new question types to api doc
* add test
* expand test to datetime question
* add new questiontypes to changelog
remove duplicate parens
* remove timezone from time only question answers
* improve codestyle
* Fix date and time formatting in control question overview
