SSH PublicKeyAccess management
After #2907, the Remote Access page could be substituted with a new SSH-specific page.Things to remove:
- "Accept connections from local/any networks" options could be removed (see #2907)
- "Enabled/Disabled" could be removed: the same effect is achievable by setting sshd "Access only from localhost" in Network Services, or through a "config setprop" console command.
- Upload and deploy root's SSH public key
- Add upload also for ordinary users in Users page. We could experiment public keys in LDAP.