Resolves#440: It has been decided to keep CS50 as required for
now, but moving it later in the curriculum to match its high
degree of challenge and very low-level orientation.
Resolves#463: It has been decided to retain CS50's dynamic
programming assignment due to the positive feedback it received
as well as the fact that the additional challenge of this problem
is acceptable now that the course is later in the curriculum.
Antony ekirapa