Multiselect association.
multiselect_association seems nicer than the other way ..
Added nice_tags => if this works alright it should replace tags. Moved reliant css & js into appropriate places.
Quick tidy up.
Removing chosen reference & getting code order consistent.
Merge branch 'feature/select2' of https://github.com/chris-teague/koi into chris-teague-feature/select2
Fixed nice_tags autocomplete tag list

Added nice_tags and multiselect_association
as fields types for dummy/products model