Purpose
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If there is no picture attached to a task, the user doesn't understand how to add a cover image.
Sepecification
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- "Select" button to select image => Display only if we have images
- "Remove Cover Image" => Display only if image already set
- "Upload and Set" => Always visible , highlight button if no images. Image uploaded via dailog box should automatically set on task kanban and add to the "Attachments" in task.