Issue 6035 - Only use openResource API when it's supported

skin/devtools-panel.css

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 156 matching lines @@
 tr:not(:hover) .action
 {
   display: none;
 }
 
 .url
 {
   width: 100%;
 }
 
-.resourceLink
-{
-  cursor: pointer;
+.resource-link {
+  text-decoration: none;
+  color: #303942;
 }
 
-.resourceLink:hover {
+.resource-link:hover {
   text-decoration: underline;
 }
 
 .action-wrapper
 {
   display: flex;
   width: 100%;
 }
 
 .action
@@ skipping 47 matching lines @@
 
 .filtered-by-search
 {
   display: none;
 }
 
 body.dark #reload
 {
   color: #2a67e7;
 }