Removed all the unnecessary file
Revert "Removed all the unnecessary file"

This reverts commit 956453a01191cfd9d7aa6d79b54e60f65d674cf8.
Modified marks submit button
Fixed edit button for marks
Replaced plus sign with ellipsis in menu options on tree
Added button for marking, and creating assessment on same page as tree
Fixed marking button link, and changed aggregate mark view
Merged datetime popup changes with tree modification changes
Adding  css and js file updates for the project, forgot them in prev update
Fixed submit button color in create assessment modal
all views now under CSRF protection
Fixed multiselect bug in adding students and markers to session
Created student tree, and modified aggregate marks button color
implementing aggregators and minor adjustments
Revert "implementing aggregators and minor adjustments"

This reverts commit c0616294fa6734d164719e65132691d62eee0637.
Solves reloading of tree problem by loading tree structure open
merged auditlog from studentView
not done
merged session time management
still working with the remove students interface