search: typeahead.css into base bundle

* Moves the typehead bootstrap stylesheet to the base bundle.

* Improves some configuration.

Signed-off-by: Yoan Blanc <yoan.blanc@cern.ch>
bibcirculation: using jquery-ui

* Replaces ui.datepicker.min.js by jquery-ui.js.

Signed-off-by: Yoan Blanc <yoan.blanc@cern.ch>
Merge remote-tracking branch 'upstream/pr/1942' into pu-zenodo-assets