| Log Message: |
Instructor.pm: modifications to assignProblemToUserSetVersion to allow
problem selection from a group of problems, as defined in a separate
set. In the assigned set, problems are indicated with the notation
problem_source = group:name_of_grouping_set
This results in a randomly selected problem from the set named
name_of_grouping_set being included in the set when a new version is
assigned.
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