Add the option to change the card size of tasks displayed in Kanban board

[AndreeaChi]

Currently, there is no option to change the card size when using a Kandan board to display tasks based on set statuses.

[snazare]

would be best to be able to define the cards (statuses) to show in the kanban board. Please investigate why the columns parameter is currently ignored and propose a fix.

[KebabRonin]

would be best to be able to define the cards (statuses) to show in the kanban board. Please investigate why the columns parameter is currently ignored and propose a fix.

The columns parameter seems to refer to the content of each task, not the statuses. It is used to retrieve extra info (such as assignee,progress,duedate) and display it as a description on each task.

Currently, filtering status values is not possible, as the JSON source takes all possible values of the property specified in the query as category.

A solution would be to add a new parameter to the AWMKanbanMacro and the JSON source, in order to filter the categories to a subset.

One question I have is whether to preserve the column parameter with its current functionality (adding a new parameter for filtering statuses), or change its behavior to be a status filter.

[KebabRonin]

This is being resolved on contrib, after it is merged it is a small update on application-task.