Fix EZP-21239: Autocomplete using YUI3

# Description

Link to the issue: https://jira.ez.no/browse/EZP-21239

The autocomplete feature of ezfind doesn't work when using 2 of the 3 japanese alphabets. These alphabets are not supported buy YUI2 autocomplete, so I rewrote the feature using YUI3 autocomplete which supports them.

# Test
Manual test using FF, chrome and IE