Replace include() by require().

The include() function is not defined here.
Merge branch 'ww2.5.2' of https://github.com/mgage/webwork2-dev into ww2.5.2
More bug fixes for Classlist editor.  In addition, some preliminary validation on input.  The classlist editor now validates for username and email address when adding.
Preliminary rewrite of the Homework Set Editor
Merge branch 'ww2.5.2' of https://github.com/mgage/webwork2-dev into ww2.5.2
Add more comments to configuration files
Merge branch 'ww2.5.2' of https://github.com/mgage/webwork2-dev into ww2.5.2
moving around javascript files and breaking things
Start on moving to amd javascript
Initial code for a Homework Set Editor 3.
removing local dists.
Merge commit '7c6c4d299e58735206d213c93b5e6bc6e05ed69d'

Conflicts:
	conf/defaults.config
	conf/localOverrides.conf.dist
	conf/templates/dgage/lbtwo.template
	conf/templates/math/lbtwo.template
	conf/templates/math2/lbtwo.template
	conf/templates/ur/lbtwo.template
	lib/WeBWorK/ContentGenerator/Instructor/UserList3.pm
	lib/WeBWorK/ContentGenerator/instructorXMLHandler.pm
Merge commit '1a2b82599047004142989fa47e8a0b53b44a4e88' into requirejs

Conflicts:
	htdocs/js/lib/webwork/WeBWorK.js
	htdocs/js/lib/webwork/teacher/User.js
Added ProblemSet.js and ProblemSetList.pm
Merge commit '1c30b8e602670981c506a1e0f20327f239d11222' into requirejs
update to get things working
A start with requirejs
Merge branch 'ww2.5.2' of https://github.com/openwebwork/webwork2-dev into ww2.5.2
Bug fixes to the Hwk Editor 3
requirejs working for library browser 3