fix default sorting in tasks_controller to use sort_rank
fix default sorting in tasks_controller to use sort_rank

ari/jobsworth,arunagw/clockingit,digitalnatives/jobsworth,digitalnatives/jobsworth,ari/jobsworth,webstream-io/jobsworth,xuewenfei/jobsworth,digitalnatives/jobsworth,ari/jobsworth,evinoca/clockingit,rafaspinola/jobsworth,evinoca/clockingit,xuewenfei/jobsworth,xuewenfei/jobsworth,rafaspinola/jobsworth,ari/jobsworth,digitalnatives/jobsworth,arunagw/clockingit,rafaspinola/jobsworth,evinoca/clockingit,evinoca/clockingit,webstream-io/jobsworth,webstream-io/jobsworth,xuewenfei/jobsworth,webstream-io/jobsworth,rafaspinola/jobsworth,digitalnatives/jobsworth,arunagw/clockingit