Multiple/all day/Subspace events: Create&Edit dialog

[SimoneZaza]

Description

As a user, I want to be able to specify events that span multiple days. As a user, I want to quickly create full-day events without the need of time input.

Acceptance criteria

• Dialog to be updated as per design
• [ ] Multiple/All day event (= already in the database)
• [ ] 15 min time steps instead of 30
• Show in Space (server work #4540)
• Add references (extracted to: #7006)
• [ ] Add location field (profile: city)

See the comments for clarifications.

Additional Context

• Select start date
• End date is set to be the same as start date
• End date can be set to be later
• If start date is then changed, end date remains the same
• Validation error (tooltip) if needed: Start of the event cannot be set to be later than the end date/time

Server things

From Svetoslav:

• There is a beginning date
• There is no end date. The end date is the sum of begin date and durationMinutes - a column in the database.
• There is no full-day field. There is a durationDays column though UPDATE: there is wholeDay field (used for the implementation).
• There is a timezone but it is hard to rely on. The original date (on the UI) is stored in the database. When read, the date is returned in UTC

Design

https://www.figma.com/design/rddyv3LBg0sbm1b7Yny9ze/Calendar-V3?node-id=35-221&t=kBz9ml9y23WojMQ7-1