Fix some quick search field issues.
Fix some quick search field issues.

lsaffre/lino_extjs6,lsaffre/lino_extjs6,lsaffre/lino_extjs6,lino-framework/extjs6,lino-framework/extjs6,lsaffre/lino_extjs6,lino-framework/extjs6,lsaffre/lino_extjs6