cse auth. works now
disable student from viewing sponsor preference
Merge branch 'master' of https://github.com/Rumel/UNL-iLab
fix student edit, and make a little change of project show page
add correct_project_owner in session_helper to disable other sponsor edit project of others. Add work track with ajax. Add instructor view student application. Open student rating in a new window (link of student preference in admin page)
admin can rate student, remove a migration file, modify seeds
change before action in project controller, not allow sponsor create project or modify other projects
Only allow cse486, 487, 488, 489 student can login