Merge pull request #576 from abhinavc/master

minor edits and corrections
[cron-git-commit] @ 21.50
2 questions added
Merge pull request #577 from adamarla/master

2 questions added
[cron-git-commit] @ 14.16
Merge remote-tracking branch 'abhinavs/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'abhinavs/master'
Merge remote-tracking branch 'abhinavs/master'
Merge remote-tracking branch 'abhinavs/master'
Mandatory nextPg after last subpart (for a given student)