Remake Group By Collection

Description: We want search results to default to Grouped by collection, rather than all results. This was implemented in 0.5 with issue #3 (closed).

Documentation (More Info): https://docs.google.com/document/d/1Rxs4NQWsL3ib5xqWd-FX5rUqh6NljQZLJHvlExx0OYA/edit?usp=sharing