[TW-1411] Include the task ID in the undo prompt

_Grové Steyn on 2014-09-08T10:04:38Z says:_

When the "undo" function is used the prompt does not show the task ID. While one can confirm the task affected by its description (which is being shown) it would be useful to have its ID shown, because the next step in the work flow is likely to involve a modification to this task, and using its ID is the quickest way to achieve this.