Add View Online Button to Search Results

Description: In search results, items with digitized content (online access) should have a clickable button that takes them directly to the digitized content. See Image 98.1 and 98.2 for more details. Related #16 (closed). 0.5 issue here: #43 (closed)

Documentation (More Info): https://docs.google.com/document/d/1TRrDT2k6bWgIGh62gHqMLfx-vJQzUxDD9Y4FCuFx7NA/edit?usp=sharing