Search for alternate names

[mark-dce]

STORY When a creator has multiple name variants, I would like to be able to search with any of them and have results returned showing the primary display name.

ACCEPTANCE When a creator has one or more alternate names created in the creator record

• [x] I can search using all or part of the alternate name
• [x] The system returns all the records for the corresponding creator
• [x] The search results (index) display the primary display name for the creator
• [x] The single item (show) view displays the primary display name for the creator
• [x] The alternate name is not displayed in search results or single item views

[fnibbit]

on index-alternates-fresh branch