Updated base class library:
- added a base class for Admin Menus
- Rewrote the Menu10 and Menu20 modules based on the new Menu base class
- pushed much of the clutter into the Plugin base
- removed some unused methods ( getDirectories() )

Fixed some bugs with the make.sh script that was not updating  plugin.php correctly.
todo: update Post.php settings to work more like the Plugin.php settings.
todo: add an array of callback functions to validate setting inputs.