Add admin option to block users #10
Description
It may be necessary to block certain users if they have an inappropriate user name or affiliation.
Proposal
- In the admin settings for "Delete user", add an option in the drop-down menu for "Block". Add this user to a database of blocked ORCIDs.
- After blocking the user, scan all petitions and remove the blocked user.
- Whenever a visitor is asked to authenticate, ensure that their ORCID is not blocked. If they are blocked, redirect to a page saying that they are blocked from using the instance and then log them out.
Note: Given that the database will be updated to include a new table of blocked users, it will be necessary to provide a mechanism to update any pre-existing databases.