Add skeleton for functional test of TasksController#update.
Add skeleton for functional test of TasksController#update.

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