copy of course redirects to list and allows undo
Added undo functionality to copying participants of an assignment to and from a course
Added a check so the undo link will appear only when non-redundent participants are copied
using undo link from application_controller
Merge branch 'kenny' of https://github.com/kbyarbor/expertiza into meng
pulled chun
changed assignment controller undo functionallity
merged travis
comment out individual undo_method