Replace WOLoginManager with WOLoginItemList (WOCommon, a89c217)
The new Launch Services API for managing login items is well suited to encapsulation in two classes: WOLoginItem (previously added) and WOLoginItemList (added in this commit). This makes all of the API previously implemented in the WOLoginManager class redundant, so remove the class.
Signed-off-by: Greg Hurrell <greg@hurrell.net>