Visualizing tasks

[akrobatim]

When we add tasks to Circles, we'll want them to both show up on the project kanban and on the individuals profile, to remind them of their tasks. When clicking on the task icon, users should be able to view their tasks, both active ones (that need to be addressed), overdue tasks (that definitely ned to be addressed) and past tasks. The past tasks can also be added to a users public profile, but we'll have to figure out how to avoid noise here...