**As** an OpenProject user,
**I want to** see the sum of spent time in the work package list
**so that** I have an overview of how many hours have been spent on the project.

**Acceptance criteria**

* Logged time is displayed similar to the fields Begin of the insertionWorkEnd of the insertion Begin of the deletion workEnd of the deletion and Begin of the insertionRemaingEnd of the insertion Begin of the deletion remaingEnd of the deletion work
* First element in the cell: Time logged on the work package itself
* Second element in the cell: Sum for the entire hierarchy including the time logged on the work package.