Merge pull request #711 from Stanford-Online/jbau-hotfix-709

Jbau hotfix 709
Merge branch 'production' of https://github.com/Stanford-Online/class2go into production
Merge pull request #779 from Stanford-Online/master

Master --> Production for Sprint-12-Hotfix-1
Merge pull request #780 from Stanford-Online/master

fix mysteriously deleted line importing reverse
Fix navigation deficiencies [Issue #697]

role="navigation" sections have aria-labelledby="" attributes,
"Jump to main content" link now has hidden-accessible style,
hidden-accessible has been defined
	modified:   c2g/static/css/core/responsive.css
	modified:   templates/base.html
	modified:   templates/course_base.html
	modified:   templates/courses/view.html
	modified:   templates/videos/list.html
Make problem sets more accessible [#673 and #748]

Buttons have a focus outline style, cards are links, and the list
now has a role="navigation" with a hidden-accessible header
	modified:   khan/static/latestKhan/css/c2g-khan.css
	modified:   khan/static/latestKhan/khan-exercise-c2g.js
Add alt attribute to thumbnails [Issue #704]

	modified:   khan/static/js/thumbnails.js
Update title blocks to reflect subsections of site

Fiznix for #700
	modified:   templates/TOS.html
	modified:   templates/accounts/changepassword.html
	modified:   templates/accounts/edit.html
	modified:   templates/accounts/profile.html
	modified:   templates/accounts/register.html
	modified:   templates/additional_pages/view.html
	modified:   templates/contactus.html
	modified:   templates/courses/preview.html
	modified:   templates/courses/view.html
	modified:   templates/landing/landing.html
	modified:   templates/privacy.html
	modified:   templates/problemsets/problemset.html
	modified:   templates/registration/activate.html
	modified:   templates/registration/login.html
	modified:   templates/registration/logout.html
	modified:   templates/registration/password_reset_form.html
	modified:   templates/registration/registration_form.html
	modified:   templates/videos/view.html
Add visibility to "Jump to Content" link when it has focus

Additional commit for #697
	modified:   c2g/static/css/core/responsive.css
	modified:   templates/base.html
Merge branch 'master' of github.com:Stanford-Online/class2go into production
Data collection and reporting
Committing to push this code on to dev #794
Makes courses.reports.views.main use the common_page_data middleware for better exception handling
New kelvinator log location
Merge branch 'master' of github.com:Stanford-Online/class2go into sef-work
Merge pull request #799 from Stanford-Online/jinpa-work

replace confusing error message (addresses part of #742)
Merge branch 'master' of github.com:Stanford-Online/class2go into sef-work
Add support for remote (default is remote) (#689)

We should be more clever with our options, but this will do for now.
Removed unmatched </div> from file ready list item
Rekelvinator script (#689)

Run with "manage.py rekelvin [options]"

By default just lists videos that are missing videos.  But a bunch of
options to kick off re-runs, either locally or remotely.

Depends on INSTANCE setting from database.py to figure out what job
queue to use.  Depends on AWS bucket info to construct a S3 path to
search, and then target source/dest for kelvinate jobs.