As a user, I want to create a new board with a custom column configuration

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Description

To be able to create boards with your own column configuration, you need to be able to quickly add, change and delete columns. There is a so-called "Template Creator" on the page for creating a new board.
There, it must be possible to create columns as desired, to name them, recolor them, prescribe them, change their visibility and delete them if necessary.

Visuals