The privileges of a new user are not saved in some cases

Create a new user (default setup = no global privileges and custom overlays = 0), then try to update any of his privileges (e.g. custom overlays = 10, add project) -> these changes are not saved at all.

It occurs that if a new user does not have in the default setup either the Map management or User management privileges, then any changes of his global privileges are not saved.

See movies:

1 Changes of privileges setup are not saved ownCloud/Disease maps/Minerva docs/test-issues/12.1.6 test/issue_659_01

2 Changes of privileges setup are saved ownCloud/Disease maps/Minerva docs/test-issues/12.1.6 test/issue_659_02_ok