Assigned tasks on user pages

The list of tasks assigned to an user will now appear on the page of the
assignee, minus the 'Assigned to' part because that'd be redundant.

database/tasks-view.sql

@@ -11,6 +11,7 @@ CREATE VIEW tasks_list
 			u1.user_view_name AS added_by,
 			ct.completed_task_time AS completed_at,
 			u2.user_view_name AS assigned_to ,
+			u2.user_id AS assigned_to_id ,
 			u3.user_view_name AS completed_by ,
 			t.task_priority AS priority ,
 			bd.bad_deps AS missing_dependencies ,