v2102

• lots of updates (including wagtail, webpack)
• storefront: use users timezone for date shown on tiles
• plans: add new field duration/Laufzeit, reorder fields in form
• plans: move export from view to exports
• plans/exports: add duration and reference number to export and change export order
• tests/plans: add duration to test data
• budgeting: add new phases for Bürgerhaushalt with 2 phases
• blueprints: add new Bürgerhaushalt with 2 Phases including image, update wording of old Bürgerhaushalt and change order of templates in blueprint list
• assets: js cleanup, rely less on global jQuery
• assets: use new maps export function from A4
• show map credits/attribution
• add new translations
• plans: only show topics if they are set and catch key error for old topics
• tests/budgeting: add tests for new phases
• plans: improve styling of detail page (break long titles, change table behaviour for mobile)
• project detail page: allow category filter to overflow
• plans/assets: use passive scroll listener
• projects/modules: add time left property for under 1 second
• exports: export empty string for None values and add this to tests
• phases: only check overlapping for existing phases, make sure both start and end date or none is there