Fix binkp remote closing connection, add/delete session details, menu item this system, minor CSS fixes, move system form editing to individual files

app/Classes/Protocol.php

@@ -107,6 +107,7 @@ abstract class Protocol
 		switch ($key) {
 			case 'ls_SkipGuard':									/* double-skip protection on/off */
 			case 'rxOptions':										/* Options from ZRINIT header */
+			case 'socket_error':
 				return $this->comms[$key] ?? 0;
 
 			case 'ls_rxAttnStr':
@@ -126,6 +127,7 @@ abstract class Protocol
 			case 'ls_rxAttnStr':
 			case 'ls_SkipGuard':
 			case 'rxOptions':
+			case 'socket_error':
 				$this->comms[$key] = $value;
 				break;