Enable wildcard operators for adv search queries

[cbeer]

We should be aware of the caveat offered upstream about using edismax here:

advanced searches are translated to solr nested queries, where the inner queries are of a dismax-type. By default, they are actually specifically 'dismax', but you can set :query_parser to 'edismax' instead. This may make additional features available like * wildcards in advanced searches; but it may also cause some user query elements to be interpreted as operators for edismax when they were intended as literals. Somewhat experimental.

[jkeck]

See #779 for lots of testing/conversation/context if we pick this back up.