Renamed member_id column in Follow table to follower_id. Made necessary modifications to models and tests.
Renamed get_follow_id to get_follow as it does not return id. Also added unit tests for the new methods in the member model.
Added more model tests for following behaviour
Break up tests into different scenarios. Defined cancan ability for follows and updated member profile view
Moved number of follows/followers under activity and added pagination.
Slight modification to the notification wording.