Change dialog buttons at bottom to match prefs dialog (bug 36589).

xpfe/components/sidebar/resources/customize.css

@@ -77,7 +77,3 @@ treeitem[selected="true"][container="true"][open="true"] > treerow > .treecell-p
 box#reorder {
   text-align: center;
 }
-box#saveCancelButtons {
-  margin-bottom: 0.5em;
-  text-align: center;
-}

xpfe/components/sidebar/resources/customize.xul

@@ -130,14 +130,7 @@
 
   </box>
 
-  <box id="saveCancelButtons">
-    <spring flex="1"/>
-    <button oncommand="Save();" id="save_button"
-      value="&sidebar.customize.save.label;" />
-    <button oncommand="Cancel();"
-      value="&sidebar.customize.cancel.label;" />
-    <spring flex="1"/>
-  </box>
+  <box id="okCancelButtonsRight" />
 
 </window>
 

xpfe/components/sidebar/resources/locale/en-US/customize.dtd

@@ -32,5 +32,3 @@
 <!ENTITY sidebar.customize.additional.label     "Available Tabs">
 <!ENTITY sidebar.customize.add.label            "Add">
 <!ENTITY sidebar.customize.preview.label        "Preview...">
-<!ENTITY sidebar.customize.cancel.label         "Cancel">
-<!ENTITY sidebar.customize.save.label           "Save">