Scholar.TreeView is now Scholar.FolderTreeView (SourcesTreeView later? depends)
Some changes to the way FolderTreeView works.
New Scholar.ItemGroup -- used by FolderTreeView and ItemTreeView.
the root folder is not currently displayed -- doesn't really matter because we are changing the way it all works.
(note: the Scholar.Items.getAll() function does not seem to be working correctly -- try clicking on the library)
* Renamed treeView.js to folderTreeView.js (more changes on this file forthcoming) -- this will soon be specifically for folders.
* Added itemTreeView.js, with new Scholar.ItemTreeView class -- specifically for items.
* The items list now supports 3 additional columns: rights, date added, and date modified.
* For now, selecting an item loads the "I'm Feeling Lucky" result of a Google search on the item title.
