Remove old OTG demo directory with useless TestApp demo. Add new DualRole directory with new Class Driver powered Mouse dual role demonstration application showing a dual role device using the HID host/device Class drivers.

Seperated out OTG, Device and Host mode demos into seperate folders for clarity. Adjusted makefiles so that the path to the LUFA library can be set in one place.

Combined Keyboad and Mouse normal and interrupt driven host demos into unified Keyboard and Mouse host demos.

Corrections to Keyboard demo.

Removed AVRISP_Programmer project due to code quality concerns.

Incomplete non-functional BluetoothHost demo removed until it has reached a stable state to prevent confusion.