Fixed a bug where gateway answer prefixes were being rendered by mathjax
Fixed a bug where long descritpions dont wrap on the homework sets editor 2 page and some gateways didn't have their descriptoins shown.
Upgraded the upgrade checker a little bit so that it always does its current checks against your current branch, no matter what it is called.
Changed the default display mode in localOverrides.conf.dist to MathJax.  It wont affect existing localOverrides files of course, and it is time to move new systems over to MathJax by default.
Fixed some more bugs with upgrade detection
Removed some left over warns
More upgrade notifier  regexp upgrade!
Added git to check_modules
Fixed what look like unintended changes to localOverrides.conf.dist
Added a die message about not having the right $problemLibrar{root} to the upgrade checker.  This is useful because it has changed in localOverrides.conf.dist.
Merge pull request #524 from goehle/2.10-bugfixes

2.10 bugfixes
Made a bunch of small changes to help pages get through accessibility screening.
Made a couple more small changes to allow for better navigation using tabs.  In particular some links changed the page visually, but not the focus.
Made set names labels for checkboxes on ProblemSets
Got font size wrong
Added MathView to GatewayQuizzes
Merge branch 'release/2.10' of https://github.com/openwebwork/webwork2 into 2.10-bugfixes
Cleaning up some fixes.
Fixed bug where hidden fields were showing up in sort menu on classlist editor.
Fixed a bug where in newer versions of cgi, CGI::pop_up will not respect the multiple attribute.