Refactor flask_server, moving the calculation of friend scores to a separate function called within display_friends. Keeps the route handler itself cleaner and easier to read.
Change names of iterables used to paginate friends - first_half_ids, second_half_ids instead of iterable 1 and iterable 2.
Instead of just printing errors in friends.py, raise exception. TODO: Flag error in NewRelic.
Shorten and refactor README, changing some details on the advice of Jennie, especially about shortening the front section and clarifying mentors' impact.