(legacy) change behaviour of associated nat rules...

(legacy) change behaviour of associated nat rules (https://github.com/opnsense/core/issues/695), show rule but hide edit and duplicate buttons

If for some reason a config has "typeless" rules, which don't belong to any active nat rule the user won't notice this anymore (and doesn't have the ability to remove them).
This can happen with imports from old configs for example or manually changed configs.

(cherry picked from commit e1dd1839)

src/www/firewall_rules.php

@@ -425,12 +425,6 @@ $( document ).ready(function() {
                      (isset($filterent['floating']) && $selected_if == 'FloatingRules')):
                   $interface_has_rules = true;
 
-                  if (!isset($filterent['type'])) {
-                      // not very nice.... associated NAT rules don't have a type...
-                      // NAT rules shouldn't leak into the rules screen, breaks on edit
-                      continue;
-                  }
-
                   // select icon
                   if ($filterent['type'] == "block" && empty($filterent['disabled'])) {
                       $iconfn = "glyphicon-remove text-danger";
@@ -629,15 +623,26 @@ $( document ).ready(function() {
                       <a id="move_<?=$i;?>" name="move_<?=$i;?>_x" data-toggle="tooltip" title="<?=gettext("move selected rules before this rule");?>" class="act_move btn btn-default btn-xs">
                         <span class="glyphicon glyphicon-arrow-left"></span>
                       </a>
+<?php
+                      // not very nice.... associated NAT rules don't have a type...
+                      // if for some reason (broken config) a rule is in there which doesn't have a related nat rule
+                      // make sure we are able to delete it.
+                      if (isset($filterent['type'])):?>
                       <a href="firewall_rules_edit.php?id=<?=$i;?>" data-toggle="tooltip" title="<?=gettext("edit rule");?>" class="btn btn-default btn-xs">
                         <span class="glyphicon glyphicon-pencil"></span>
                       </a>
+<?php
+                      endif;?>
                       <a id="del_<?=$i;?>" title="<?=gettext("delete rule"); ?>" data-toggle="tooltip"  class="act_delete btn btn-default btn-xs">
                         <span class="fa fa-trash text-muted"></span>
                       </a>
+<?php
+                      if (isset($filterent['type'])):?>
                       <a href="firewall_rules_edit.php?dup=<?=$i;?>" class="btn btn-default btn-xs" data-toggle="tooltip" title="<?=gettext("clone rule");?>">
                         <span class="fa fa-clone text-muted"></span>
                       </a>
+<?php
+                      endif;?>
                     </td>
                   </tr>
 <?php