5. Display searched text/attributes in summary for smart folder.

FIXED:

1. Clean empty directory after remove files. (Consolidate library ?)
2. Fix drag from GWorkspace (Done, GWorkspace use NSDraggingPrivate).
3. Fix image problem of <caution>, <note> and <information>. (Done, -cellFrameForTextContainer:proposedLineFragment:glyphPosition:characterIndex: is called repeatly if the return height is the proposedLineFragment.)
4. Fix updating note when switching between sources.
