Added note to settings page about connecting using a proxy script

HSPI_TeslaPowerwall/HSPI.cs

@@ -40,11 +40,12 @@ protected override void Initialize() {
 				.WithLabel("plugin_status", "Status (refresh to update)", "x")
 				.WithInput("gateway_ip", "Backup Gateway LAN IP")
 				.WithInput("gateway_port", "Backup Gateway Port")
+				.WithLabel("port_note", "", "The default port is 443, and should not need to be changed by most users.")
 				.WithInput("gateway_username", "Backup Gateway Customer Email")
 				.WithInput("gateway_password", "Backup Gateway Customer Password", EInputType.Password)
-				.WithLabel("auth_note", "", "Prior to Gateway firmware version 20.49.0, authentication was not required to retrieve energy statistics. In later versions, authentication is required.")
+				.WithLabel("auth_note", "", "Prior to Gateway software version 20.49.0, authentication was not required to retrieve energy statistics. In later versions, authentication is required.")
 				.WithLabel("auth_note_2", "", "<b>These credentials <u>are not</u> your Tesla.com or Tesla app credentials.</b> These credentials are set in the Gateway's web administration panel, which can be accessed at https://your.gateway.ip on your local network.")
-				.WithLabel("port_note", "", "The default port is 443, and should not need to be changed by most users.")
+				.WithLabel("proxy_note", "", "Gateway software version 21.20.2 introduced a bug which can prevent the plugin from successfully connecting to the Gateway, especially on Linux under Mono. If you are experiencing connection problems, you may need to <a href=\"https://forums.homeseer.com/forum/energy-management-plug-ins/energy-management-discussion/tesla-powerwall-dr-mckay/1482377-using-a-tls-proxy-to-connect-to-the-gateway\" target=\"_blank\">connect to the Gateway using a proxy script</a>.")
 				.WithGroup("debug_group", "<hr>", new AbstractView[] {
 					new LabelView("debug_support_link", "Support and Documentation", "<a href=\"https://forums.homeseer.com/forum/energy-management-plug-ins/energy-management-discussion/tesla-powerwall-dr-mckay\" target=\"_blank\">HomeSeer Forum</a>"), 
 					new LabelView("debug_system_id", "System ID (include this with any support requests)", analytics.CustomSystemId),