Fixed an issue where renaming a course caused the past answers to not be found in the database.
Removed extraneous code.
Fixed bug with achievement items not generating the correct array of set problem counts.
Merge branch 'master' of http://github.com/openwebwork/webwork2 into renamefix

Conflicts:
	lib/WeBWorK/DB.pm
Merge pull request #283 from goehle/renamefix

Rename Bug