[WIP] Add CrudManager tests

- [x] CrudManager - extra headers 
- [x] CrudManager - sort params
- [x] CrudManager - sort headers
- [x] CrudManager - global query
- [x] CrudManager - quick filters
- [x] CrudManager - filterReferencedList
- [x] CrudManager - truncateListValue
- [ ] CrudManager - getReferencedListValues
- [ ] CrudManager - filterReferencedList
- [ ] CrudManager - getReferencedLists
- [ ] CrudManager - fillReferencesValuesFromCollection