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.

# Screenshots

## Admin
![autocomplete_admin_top](https://f.cloud.github.com/assets/4035241/1245178/72222ce6-2a99-11e3-863f-29c929ec819f.png)

![autocomplete_admin_page](https://f.cloud.github.com/assets/4035241/1245181/787d4ecc-2a99-11e3-8a7f-4786751ded68.png)

## eZdemo
![autocomplete_ezdemo_page](https://f.cloud.github.com/assets/4035241/1245189/a2ce7804-2a99-11e3-9062-d359f8f2b09c.png)

## eZflow
![autocomplete_ezflow_top](https://f.cloud.github.com/assets/4035241/1245193/b23fa240-2a99-11e3-8a98-5af73295bc3e.png)

![autocomplete_ezflow_page](https://f.cloud.github.com/assets/4035241/1245194/b7b02524-2a99-11e3-8c84-1436e17e36a8.png)



# Test
Manual test using FF, chrome and IE