Set the old modules offline and introduced the new ones.

- New interface: OperatingSystem. Controls some OS specific stuff that
is sometimes needed. It can not be changed, it'll always be active, no
matter what platform you may have choosen.
- Added P_ and I_ prefix as the platform and OS name may crash one
another.
- Started basic modules for UNIX and Darwin
- Rewritten config/main.php to load new module
- Edited design and layout some
- Made yiic usable :)
- Added wrappers: d0 and d0.dev
- Cleaned up some internals
- basic commands work. Try running the two wrapper scripts to get an
overview of the new commands. One more command to come: d0.build
- SpycObject got a slight update.
- Yii::app()->theme now configured from within Controller
- gui.php is rewritten- last trails of APPJS is now gone.
- Started d0rc, which will hold the user settings which may be used by
GUI and CLI.