fix(tasks): Fixed task preview to display des/user correctly.
fix(tasks): Added task assignee to task list view.
fix(tasks): html errors
Merge pull request #9 from nidzix/task-fix

fix(tasks): html errors
fix(tasks): fixed minor issues, added assigneeView directive, updated desks service.
Merge remote-tracking branch 'ozan/task-preview-fix' into devel

Conflicts:
	app/scripts/superdesk-dashboard/tasks-controller.js