Show a tooltip when the Users tab is disabled

[hayley-jean]

It would be helpful to provide a tooltip for why the Users tab is greyed out in the UI when user management is disabled on the server, in the same manner that the Projections and Stream Browser tabs do.

The Users tab in the UI can be disabled for the following reasons:

1. EventStoreDB is running in insecure mode, which disables users as well.
2. EventStoreDB is configured to use another method for auth and user management, such as LDAPS or OAuth.

_DB-117

[ylorph]

for 1. the fact that it's not using https might help there ?

[alexeyzimarev]

I think we should keep the tab enabled, and on the page show "user management is not enabled because the cluster is not running in secure mode" with the docs link. The issue with a tooltip is that we can't add this link.

[ylorph]

this means the doc needs a permalink….