Merge branch 'master' of http://github.com/Stanford-Online/class2go into dca_new_working2
Fixes #1716 - survey summary report.

The report is generated from c2g_examrecord.json_data.

There is a known problem with textarea inputs that needs to be addressed
after some discussion.
Merge branch 'master' of http://github.com/Stanford-Online/class2go into dca_new_working2
Merge branch 'master' of http://github.com/Stanford-Online/class2go into dca_new_working2
Address Joe's concerns for this PR (#1852).
Merge pull request #1852 from Stanford-Online/dca_new_working2

Addresses #1716; Survey summary report
Add Show/Hide Explanation toggle for Summative results page

	modified:   templates/exams/view_exam.html
Merge branch 'master' of https://github.com/Stanford-Online/class2go into wescott-master-exercise-work