Hide Event/Task Categories

[davidhedlund]

Checklist

• I made sure that there are no existing issues - open or closed - to which I could contribute my information.
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• This issue contains only one feature request.
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Feature description

Pres-requisite

• Implementation of CATEGORIES property to organize and color events #478

Why do you want this feature?

Todo.ics example:

• Create a bunch of Tasks and add Category:Ideas to them
• Create a bunch of Tasks and add Category:Issues to them

public_holiday.ics example:

• Import an ICS file with public holidays labeled CATEGORY:PUBLIC:, and other anniversary's labeled CATEGORY:OPTIONAL

Feature request

I would be useful to be able to hide categories.

• For the Todo.ics calendar file example: It would be useful to scale
• For the public_holiday.ics calendar file example: In my case I have no use of CATEGORY:OPTIONAL because these days are not Swedish legal basis for public holidays.[1]

1: Förordning (1989:253) om allmänna helgdagar - https://www.riksdagen.se/sv/dokument-och-lagar/dokument/svensk-forfattningssamling/lag-1989253-om-allmanna-helgdagar_sfs-1989-253/

Additional information

No response