Begin of the insertion### Current

End of the insertion Currently we have different input fields: Begin of the insertion
(for a detailed list, have a look at https://drive.google.com/file/d/1MX-AUwsE5m-NOeQRPth1ulSUUjloqYmh/viewEnd of the insertion

**Column selection** Begin of the insertion

End of the insertion Begin of the deletion


End of the deletion 

**Custom fields** Begin of the insertion

End of the insertion Begin of the deletion


End of the deletion 

**Project** Begin of the insertion

End of the insertion Begin of the deletion


End of the deletion  Begin of the insertion

### Expected

* We should use the same autocompleter everywhere. This has multiple advantages:
* Users only have to handle one kind of field, making it easier to use.
* Easier maintenance as we only have to deal with one implementation
* We can reduce our amount of code.
* Right now the ng-select is the most promising implementation and already used for the WP attributes, the search and the watchers.End of the insertion