Add finder API client via gds-api-adapters bump to 10.3.0
Merge pull request #16 from alphagov/add-finder-api-client

Add finder API client via gds-api-adapters bump to 10.3.0
Omit empty values in Document#metadata

Also add specs for the method.
Merge pull request #18 from alphagov/fix-empty-metadata

Fix empty metadata
Add methods to get selected values

So that we have access to both the title and value for the frontend.
Also allow non_described values so that the frontend won't announce
that those values are selected.
Add preposition to be used in result sentence

So that the sentence can be dynamically created add prepositions to the
facets.
Add sentence to the top of results block

Create a sentence about the current filters.
Update tests for new markup