Feature/item table adaptions

__Tasks:__

- [x] misc. adaptions for improving item-table
- [x] added simple-view for editable-data-row
- [x] adaptions and bugfixes in editable-data-row 
- [ ] gather feedback for my changes

__Informations:__

| Q             | A
| ------------- | ---
| Tests pass?   | -
| Fixed tickets | -
| BC Breaks     | -
| Doc           | -