Added the support for Shibboleth lazy session mode
Merge pull request #14 from ubc/master

Added Shibboleth lazy session support
Fixed OPL-update to use libraryVersion from  rather than a VERSION file
Removed errant submodule references
Update lib/WeBWorK/Constants.pm
Update lib/WeBWorK/Constants.pm

Turn off debugging by default
Merge remote-tracking branch 'webwork2-dev/ww2.5.1.1'
Syncing webwork2/master with webwork2-dev/ww2.5.1.1
Merge branch 'ww2.5.1.3' of https://github.com/mgage/webwork2-dev into ww2.5.1.3
math4 theme

This includes math4 theme, along with a minor bugfixes and tweaks all around.
Added ability for students to use Past Answers while maintaining current functionality for instructors
Made Classlist editor 2 use tabber.
Made math4 play a little nicer with hardcoded text box lengths
Merge branch 'math4'
Merge branch 'student-past-answers'

Conflicts:
	lib/WeBWorK/ContentGenerator/Instructor/ShowAnswers.pm
Merge pull request #21 from mgage/update_release_candidate

Update release candidate
Added better integration for essay questions
Tweaking the problem grader
Fixed popover stuff on problem grader
Merge branch 'math4'

Conflicts:
	htdocs/themes/math4/math4.css
Merge branch 'ww2.5.1.3'