Dataset search UX improvements as of Jan 2012

[rgrp]

Changes to make search both more exploratory and more satisfying to use

• Search query build - #1603
  • Ability to add new facet fields "live"
  • That is add fields which then contain faceted options (a bit like data.hri.fi)
• (??) Autocomplete / drop down on search (i.e. search while you type)
  • Dubious about value / cost ratio here

Probably would involve to pure JS and HTML implementation.

Implementation

Probably require

• API changes to expose solr style API directly #1737