update mathjax
Merge branch 'develop' of https://github.com/openwebwork/webwork2 into develop
Merge branch 'develop' of https://github.com/openwebwork/webwork2 into develop
Merge pull request #109 from goehle/devupdates

Fixed bug 2653
Merge branch 'develop' of https://github.com/openwebwork/webwork2 into develop
Merge pull request #110 from mgage/develop

Develop
Modified pgeditor3 so that the modal is only shown on View and Update.  For NewVersion and Revert it refreshes the editor page (unless new window is checked).