[IMP] close search autocompletion list while completing
[IMP] close search autocompletion list while completing

Looks slightly worse as results don't seamlessly update in-place, but
limits/avoids the risk of quick-typing, hitting [Return] and getting
an incomplete/incorrect query because the completion didn't catch up
(e.g. slow network) and [Return] validated the previously retrieved
completion.


havt/openerp-web,akretion/openerp-web,akretion/openerp-web,havt/openerp-web,akretion/openerp-web,havt/openerp-web,havt/openerp-web,havt/openerp-web