Issue 2374 - Implemented Tweaks section in options page

skin/options.css

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 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 594 matching lines @@
   background-color: transparent;
   border: 0px;
   color: #3A7BA6;
   cursor: pointer;
 }
 
 /*
   Advanced tab content
 */
 
-#tweaks .table li
+#tweaks.table li
 {
   padding-bottom: 0px;
 }
 
 #filter-lists > div
 {
   display: none;
 }
 
 body[data-tab="advanced-allFilterLists"] #all-filter-lists,
@@ skipping 647 matching lines @@
   margin-bottom: 20px;
   word-wrap: break-word;
 }
 
 body:not([data-dialog="custom"]) #dialog-title-custom,
 body:not([data-dialog="custom"]) #dialog-content-custom,
 body:not([data-dialog="language"]) #dialog-title-language,
 body:not([data-dialog="language"]) #dialog-content-language,
 body:not([data-dialog="predefined"]) #dialog-title-predefined,
 body:not([data-dialog="predefined"]) #dialog-content-predefined,
 body:not([data-dialog]) #dialog

[saroyanm, 2016/02/29 14:34:39]

Can you also please remove this style from the dialog while you already
specifying the aria-hidden style ?

[Thomas Greiner, 2016/02/29 17:32:43]

Removing this rule causes the dialog to show all variants at the same time when
one of them is opened. Therefore I left it in.

 {
   display: none;
 }
 
 #dialog-content-language .dialog-content-block
 {
   display: flex;
   flex-direction: column;
   height: 120px;
 }
@@ skipping 20 matching lines @@
 #other-language .button-add::before
 {
   display: none;
 }
 
 #other-language .display
 {
   -webkit-margin-start: 10px;
   -moz-margin-start: 10px;
 }