Bulk check/uncheck all keys in the config

[a-b]

Is your feature request related to a problem? Please describe. As a user, I want to add problematic keys gradually. To do that, on the configuration page, I should uncheck each key individually. That takes time and annoys me.

Describe the solution you'd like I propose to add a new checkbox in the header row of the keys table that will check/uncheck all keys altogether.

Describe alternatives you've considered This control could be placed under the table as a button or checkbox similar to Set ALL

[Bluekezhou]

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