Cleanup Bookmarks, History, and SavedPages screen

- Redesigned bookmark thumbnail view
- Custom ImageView to scale the thumbnail properly
- Fix column count in bookmark expandable view
- Disable GroupView if we have only one account in bookmark

Change-Id: I2fccae50b9e96c909744bd5c7d0af7b373136c54
diff --git a/res/values-sw600dp/dimensions.xml b/res/values-sw600dp/dimensions.xml
index 8edbf5b..8e6bf31 100644
--- a/res/values-sw600dp/dimensions.xml
+++ b/res/values-sw600dp/dimensions.xml
@@ -12,7 +12,7 @@
 -->
 <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
     <dimen name="bookmarkThumbnailWidth">180dip</dimen>
-    <dimen name="bookmarkThumbnailHeight">120dip</dimen>
+    <dimen name="bookmarkThumbnailHeight">90dip</dimen>
     <dimen name="widgetThumbnailHeight">104dip</dimen>
     <dimen name="widgetColumnWidth">130dip</dimen>
     <dimen name="favicon_padded_size">28dip</dimen>
@@ -23,7 +23,7 @@
     <dimen name="mv_item_width_portrait">213px</dimen>
     <dimen name="mv_border_width">3px</dimen>
     <!-- For the combined Bookmarks History view -->
-    <dimen name="combo_paddingTop">50dip</dimen>
+    <dimen name="combo_paddingTop">0dip</dimen>
     <dimen name="combo_horizontalSpacing">8dip</dimen>
     <dimen name="suggest_item_padding">8dp</dimen>
     <dimen name="tab_thumbnail_width">240dip</dimen>