Changes in the experiment - 
1. Want to show recommendations only relevant to the task, and during
the task.  
2. Removed the old recommendations pane. And the new
recommendations pane shows recommendations for current task on pressing
the "show recommendations" button.
3. Recommendations pane gets flushed on each tasks so the users will
focus on the current task recommendations only, instead of going through
all of them that included ones from previous tasks also.

Future changes - 
Make "I already know this recommendation" button persistent. Once
clicked, the recommendations should save that property.