Remove excess parentheses
Use %Q{} for strings containing quotes
Correct variable name in comment
Use .find when converting index name to short form

This is a bit clearer to read.
Use {} for chained block, as per styleguide
Assert that stubbed method was used directly

Instead of copying the expected url and asserting that that was called.
Move more presentation into UnifiedSearchPresenter

Move all the interpretation of the response from elasticsearch into the
UnifiedSearchPresenter, which seems a better place for presentation
logic, and this makes the code clearer.
Use % instead of %Q for quoting
Merge pull request #212 from alphagov/unified_search_cleanups

Unified search cleanups