ets-berkeley-edu/calcentral — pull request #2572 by raydavis (2014-05-28 23:28:47+00:00)
Title: CLC-3803 Unvanish "F" grades

https://jira.ets.berkeley.edu/jira/browse/CLC-3803

The not-really-necessary ng-if interpreted "F" as short-for-False.