Issue 2381 - Added share overlay to options page

skin/options.css

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 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 204 matching lines @@
   width: 16px;
 }
 
 #tab-contribute .icon
 {
   background-position: -30px -17px;
   height: 16px;
   width: 16px;
 }
 
+#tab-share:lang(zh),
+#tab-share[hidden]
+{
+  display: none;
+}
+
+#tab-share:lang(zh) + li,
+#tab-share[hidden] + li
+{
+  border-top: none;
+}
+
 #tab-content
 {
   background-color: #FFFFFF;
   border: 1px solid #CDCDCD;
   border-radius: 8px;
   padding: 0px 60px 40px 60px;
   width: 960px;
 }
 
 #tab-content h1
@@ skipping 641 matching lines @@
   -moz-padding-end: 10px;
   -webkit-padding-start: 0px;
   -moz-padding-start: 0px;
 }
 
 #other-language .display
 {
   -webkit-margin-start: 10px;
   -moz-margin-start: 10px;
 }