[Navigator] Refine Cookie Manager's layout slightly

navigator/components/permissions/content/cookies.xul

@@ -98,19 +98,20 @@
         </rows>
       </grid>
     </hbox>
-    <separator class="groove"/>
   </vbox>
-  <hbox align="end">
-    <hbox class="actionButtons" flex="1">
+  <vbox>
+    <hbox class="actionButtons" align="left" flex="1">
       <button id="removeSelectedCookies" disabled="true" icon="clear"
               oncommand="gCookiesWindow.deleteCookie();"/>
       <button id="removeAllCookies" disabled="true" icon="clear"
               oncommand="gCookiesWindow.deleteAllCookies();"/>
-      <spacer flex="1"/>
-#ifndef XP_MACOSX
+    </hbox>
+  </vbox>
+  <separator class="groove" style="margin-left: 8px; margin-right: 8px"/>
+  <hbox align="end">
+    <hbox class="actionButtons" align="right" flex="1">
       <button oncommand="close();" icon="close"
               label="&button.close.label;" accesskey="&button.close.accesskey;"/>
-#endif
     </hbox>
     <resizer type="window" dir="bottomend"/>
   </hbox>

navigator/components/permissions/locale/cookies.dtd

@@ -2,7 +2,7 @@
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 
-<!ENTITY window.width                       "36em">
+<!ENTITY window.width                       "45em">
 
 <!ENTITY     cookiesonsystem.label          "The following cookies are stored on your computer:">
 <!ENTITY     cookiename.label               "Cookie Name">