component generally works, but needs some visual/behaviour improvements
e.g.:
on ipad the dropdown of possible entries does not open, when clicking the empty part of the textbox (whereas it opens when clicking an
already chosen label)
on android the dropdown list size shrinks to 1 line after a new value was added, when selecting another existing value
on android when pressing [backspace] the last already selected item is not deleted
textfield loses focus, after adding a new value
the "no result" popup expands first then resize

<zk>
  <chosenbox width="300px" noResultsText="No Result" />
</zk>