Vs2typeahead

Moving from visualsearch to twitter typeahead.js
Depends on https://github.com/inaes-tic/mbc-common/pull/61

I choose to use a facebook style search, just one input that autocomplete and search in any defined groups (like facets).

Also I have submit 3 PR to typeahead.js:
* https://github.com/twitter/typeahead.js/pull/722
* https://github.com/twitter/typeahead.js/pull/723
* https://github.com/twitter/typeahead.js/pull/717