Added missing error messages to firewall language file.

interface/web/admin/lib/lang/en_firewall.lng

@@ -6,4 +6,7 @@ $wb["tcp_port_help_txt"] = 'Separated by comma';
 $wb["udp_port_help_txt"] = 'Separated by comma';
 $wb["active_txt"] = 'Active';
 $wb["firewall_error_unique"] = 'There is already a firewall record for this server.';
+$wb["active_txt"] = 'Active';
+$wb["tcp_ports_error_regex"] = 'Character not allowed in tcp port definition. Allowed characters are numbers, ":" and ",".';
+$wb["udp_ports_error_regex"] = 'Character not allowed in udp port definition. Allowed characters are numbers, ":" and ",".';
 ?>
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