Improve project results when input is exact match

Problem/Motivation

#3245497: Not able to select many popular modules improved search for most projects. However, it isn't perfect

We need to make sure exact matches get weighted higher.

Proposed resolution

Add a condition on an exact equals

    $query->condition(
      (new Condition('OR'))
        ->condition('title', $string)
        ->condition('shortname', $string)
    );

    $title_or_shortname = new Condition('OR');
    $title_or_shortname->condition('title', '%' . $this->connection->escapeLike($string) . '%', 'LIKE');
    $title_or_shortname->condition('shortname', '%' . $this->connection->escapeLike($string) . '%', 'LIKE');
    $query->condition($title_or_shortname);

But this is probably moot since we sort by usage.

Remaining tasks

Review 7.x code & query. Why did they results seem more consistent?