[osx] Add the thumbnail view.
[osx] Fix to use IKImageBroswerView for thumbnail view.
[osx] Refactor the order of bookmarks by name.
[osx] Fix not to use NSSplitView for replacing table view and thumbnail view.
[osx] Add the feature of D&D to thumbnail view.
[osx] Fix to save bookmark files.
[osx] Update version to 1.1.4.