[cs13001] backup instructors rearranged, more lab sections added

[Mikhail Nesterenko]

CSI students,

The backup lab instructors are rearranged. Also, you may now go to
section 005 and 006 lab times (T 5:30-7:25pm, R 5:30-7:25pm) if you
need extra help. The up-to-date information on all this is on the
course's webpage.

Thanks,
-- 
Mikhail