(1) Before this commit, the input barcode was removed from the dom
after each scan but now we want to keep it focused to avoid to
automatically open the virtual keyboard in mobile.
This behavior will be useful in enterprise only.
Another commit will follow in this repository.
As the input is not removed anymore, we had to disable autocomplete
to hide previous entries as suggestions.
(2) We also add z-index property to avoid to click on the hidden input
located in the middle of the page.
Adrien Dieudonne
a30d9aa560