Allow timesheet approvers to move time from one task to another task and add new tasks

Allow timesheet approvers to move time from one task to another task on a different person's timesheet. This means that timesheet approvers need the ability to add a project/task onto another person's timesheet in order to move the time.

Example: Worker logged 2 hours to General Overhead, but timesheet approver/manager knows that 1 hour should have charged to a real project. Timesheet approver should be able to move that 1 hour instead of just entering a comment and rejecting the timesheet back to the worker.