[FEATURE] Item-table adaptions and simple-view for editable-data-row

__Tasks:__

- [x] misc. adaptions for improving item-table
- [x] added supplier to item entity
- [x] added simple-view for editable-data-row
- [x] replaced husky select by standard select (due to overlap issue: https://github.com/massiveart/POOL-ALPIN/issues/170)
- [x] adaptions and bugfixes in editable-data-row 
- [x] added util/helper.js with a simple parseDate function
- [ ] gather feedback for my changes

__Informations:__

| Q             | A
| ------------- | ---
| Tests pass?   | -
| Fixed tickets | -
| BC Breaks     | -
| Doc           | -
isn't this a constant as well?