Fix dialog path
Add oxpoints-autocomplete script to library

As the autocomplete functionality is used across 3 different plugins,
its best served from the /lib folder
Also load it in the test.html file
Fix oxitem_autocomplete class assignment
Load jQuery UI (for autocomplete functionality)
Remove template_url field (decided its no longer necessary)
Remove autocomplete functionality from channel_name field

Decided that user types in feed name in full. May provide brief
instructions in the page to explain what is needed of the field
Directory oxpoints-autocomplete renamed to courses-js-widget autocomplete

Done for easier merging later on
Add chosen jQuery plugin to lib for easier select/select-multiple handling
Turn sort_values field into select-multiple and add fields
Load chosen plugin JS and CSS
Bind 'chosen' functionality to sort_values field