fix for bug #387996: add a "Places" folder to the bookmarks menu, populated with smart folders

fix for bug #387734:  add a "Places" folder to the bookmarks toolbar, populated with smart folders
fix for bug #385826:  pre-populated places queries
fix for bug #396807:  have "top 10 most visited sites" as a pre-populated smart folder
fix for bug #385831:  Investigate dependencies for Most Used Tags query
fix for bug #378799:  GROUP_BY_FOLDER only works in simple bookmark-folder queries

thanks to dietrich for the initial GROUP_BY_FOLDER patch.

r=dietrich,mano  a=blocking-firefox-3+

browser/themes/gnomestripe/browser/browser.css

@@ -242,6 +242,12 @@ menuitem.bookmark-item {
   -moz-image-region: rect(16px, 32px, 32px, 16px) !important;
 }
 
+/* ::::: query items ::::: */
+
+.query-item[container] {
+  list-style-image: url("chrome://browser/skin/places/query.png");
+}
+
 /* ::::: primary toolbar buttons ::::: */
 
 .toolbarbutton-1 {