controller returnToPreviousVersion and delete resource
add delete link to view
Merge branch 'master' of https://github.com/KUTCO/SchoolHub into courses
Merge branch 'master' of https://github.com/KUTCO/SchoolHub into courses
controller and view getAllCourceResoursesByFile
fix link getCourceResoursesByCourse
delete old upload form
fix link view returnToPreviousVersion
view upload form
change view location
Delete duplicate fileuploader
fix view link file upload
basic filedownload function