**As** an OpenProject user
**I want** remaining hours to be calculated based on the difference of estimated time and logged time (on the work package)
**so that** I have an automatic way to calculate the remaining time.

**Acceptance criteria**

* [x] When _Work_ is set for a work package, _Remaining work_ should be set accordingly. 
* [ ] When time is logged on the work package, the _Remaining work_ should be reduced accordingly (_Remaining work_ = _Work_ - _Logged time_).
* [ ] When _Work_ is edited, the _Remaining work_ should be adjusted accordingly.
* [ ] When a user logs time on a work package the user can decide to reduce the _Remaining work_ accordingly.
* [ ] All values need to be shown in one modal view (similar to the duration in the date picker)
* [ ] Work
* [ ] Spent time
* [ ] % Complete
* [ ] Remaining work
* [ ] Spent time can be higher than estimated time. Example
* [ ] Logged time: 50 h
* [ ] Work: 40 h
* [ ] Remaining work: 0 h
* [ ] Remaining work can not be higher than Work Begin of the insertion
* [ ] This feature should be configured in the project settings if this automation is happeningEnd of the insertion