Upstream report: https://secure.phabricator.com/T6051 (Closed, Declined -- see explanation of alternative plans, mainly a Way to edit which column a task is in from the task itself)
Its possible to see workboards for a specific project without any problems, but mobile devices doesn't have a drag and drop possibility, so i can't move a card to another column. That should be possible (e.g. with a little arrow at the right side of each task with options like "move" to move the card to another column).