Replaced NSErrorFailingURLStringKey with NSURLErrorFailingURLStringErrorKey
Replaced -runModalForDirectory:file: with -runModal
style...
DBPrefsWindowController now conforms to NSAnimationDelegate protocol
Another deprecated API
DBPrefsWindowController should  conform to NSToolbarDelegate
Clean code
Merge pull request #14 from smokyonion/RemoveDeprecatedAPIs

Replace deprecated APIs with new ones