New placement POC
CSS update, typeahead like
Cleaned code, based on typeahead techniques
Removed unused property
Fixed keypress handler
Optimised empty box check
Fixed navigation autocomplete
Refactor fetch() to use $.proxy
Mimic typeahead keyboard management
Fixed move handler to be like typeahead
Much improved keyboard support
Hide autocomplete box on selectChoice event
CSS fixed (deleted code is debugged code)
Removed 'hack allowing proper display of multiple choice widgets in theadmin'
Cleaned autocomplete box design
Commented code
Avoid having the cursor to move when using up/down
Fixed unit tests.

Tests where depending on two css classes, .inner-container and
.outer-container. Those classes where used internally by autocomplete.js
and where de-bloated.
Fixed wrong choiceSelector usage
s/live(/on(/