ui: config: move node ops (http-proxy) into existing "Authentication"

Mainly as Config -> Option is a weird name, Authentication has only
one obj. grid, the node options are only the http-proxy for now and
that is a sort of authentication, so good enough for me for now, but
should be rethought for 2.0 and/or once more node opts are added

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

www/SystemConfiguration.js

@@ -63,14 +63,14 @@ Ext.define('PBS.SystemConfiguration', {
 		    title: gettext('Webauthn'),
 		    xtype: 'pbsWebauthnConfigView',
 		},
-	    ],
-	},
 		{
-	    title: gettext('Options'),
-	    itemId: 'options',
+		    // FIXME: this is only a semi-OK place as long as there's only the http-proxy in there
+		    title: gettext('HTTP proxy'),
 		    xtype: 'pbsNodeOptionView',
 		},
 	    ],
+	},
+    ],
 
     initComponent: function() {
 	let me = this;