(legacy) remove encoding validation in nat.._edit, closes...

(legacy) remove encoding validation in nat.._edit, closes https://github.com/opnsense/core/issues/671

src/www/firewall_nat_1to1_edit.php

@@ -157,12 +157,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'GET') {
         }
     }
 
-    // validate input
-    foreach ($pconfig as $key => $value) {
-        if($value <> htmlentities($value))
-            $input_errors[] = sprintf(gettext("Invalid characters detected (%s).  Please remove invalid characters and save again."),htmlentities($value));
-    }
-
     /* input validation */
     $reqdfields = explode(" ", "interface external src dst");
     $reqdfieldsn = array(gettext("Interface"), gettext("External subnet"), gettext("Source address"), gettext("Destination address"));

src/www/firewall_nat_edit.php

@@ -185,12 +185,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'GET') {
     }
 
     /* Validate input data  */
-    foreach ($pconfig as $key => $value) {
-        if(htmlentities($value) <> $value) {
-            $input_errors[] = sprintf(gettext("Invalid characters detected %s. Please remove invalid characters and save again."), htmlentities($value));
-        }
-    }
-
     if( $pconfig['protocol'] == "tcp"  || $pconfig['protocol'] == "udp" || $pconfig['protocol'] == "tcp/udp") {
         $reqdfields = explode(" ", "interface protocol dstbeginport dstendport");
         $reqdfieldsn = array(gettext("Interface"),gettext("Protocol"),gettext("Destination port from"),gettext("Destination port to"));

src/www/firewall_nat_out_edit.php

@@ -182,11 +182,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'GET') {
     }
 
     /* input validation */
-    foreach ($pconfig as $key => $value) {
-        if(htmlentities($value) <> $value) {
-            $input_errors[] = sprintf(gettext("Invalid characters detected %s. Please remove invalid characters and save again."), htmlentities($value));
-        }
-    }
     $reqdfields = explode(" ", "interface protocol source source_subnet destination destination_subnet");
     $reqdfieldsn = array(gettext("Interface"),gettext("Protocol"),gettext("Source"),gettext("Source bit count"),gettext("Destination"),gettext("Destination bit count"));