Use Solr instead of Views to count results

Problem/Motivation

Using Views to get results for a suggestion phrase costs too much on the server. We will use a Solr direct query to get the results so we avoid Drupal bootsrapping etc.

Proposed resolution

Create an additional method to use Solr for counting the results (documents) found.
Keep the Views count method on code but as an alternative.

Remaining tasks

None

User interface changes

None