Script Summary: Add indicator which exercises and labs are graded (v0.14)
MITx Grading Indicator
Add indicator which exercises and labs are graded. Homeworks and labs are
always marked as graded except for the ungraded ones in week 1;
exercise problem sets are marked as ungraded.
Note: Updated algorithm to take care of the change in naming conventions that broke the old version. Sorry for the delay, folks. For clarification on the nature of the issue, read the discussion post. In response to that, the new version will only add "graded" and "ungraded" labels. Unknown things that look like problem sets will not be labelled at all to avoid confusion. :)