Fixed bug related to case-sensitive filenames in FrontPage.js, classlistManager.js, HomeworkManager.js and a bug related to splitting AddStudentManView.js (part of the classlistManager) into its own file.
Fixed Issue #3 of pstaabp/webwork-dev.
Added functionality proposed in pstaabp/webwork-dev issue #4 to allow changing of dates in All Problem Sets View and improved validation of dates.
Merge branch 'ww2.5.2' of https://github.com/mgage/webwork2-dev

Conflicts:
	htdocs/js/apps/ClasslistManager/classlistManager.js
	htdocs/js/apps/FrontPage/FrontPage.js
Resolved Issue #5 in pstaabp/webwork-dev
Merge pull request #24 from pstaabp/master

Resolved issues #3,4 and #6