★ Change the 'Copy list' function to 'Backup list' and make list-creation/coping Admin-Only

Academics keep using the 'copy list' function to make unnecesary duplicate lists, or 'create new lists' -- abandoning their existing list and starting new ones.

Sometimes they do this because it reassures them that they have made a 'back-up' before editing. However duplicates lists causes a lot of problems we want to avoid.

To solve this, we propose:

1. the 'copy list' function is replaced with 'backup list', which simultaneously copies AND archives the list, creating a backup (in case the lecturer accidentally deletes entire lists, sections, or resources)

2. the 'copy list' function on archived lists would ONLY be available to admins (academics would have to request to admin to copy/'activate' an archived back-up list)

3. the 'Create new list' function in My Lists would ONLY be available to admins (academics would have to request to admin to create a new list)