Distorted Android

Major push towards simplifying DistortedObject's public API.
All MATRIX effects are using the new API - the 'DataND' marker interfaces.

Move the 'Save' effect to the Application and remove the 'OTHER' effect queue

1. new package 'message'
2. Rename the 'Grid' classes to match

move data types, like FlatND and InterpolatorND, to a separate package.

comment cleanup in DistortedObject.

cleanup in DistortedObject's methods.

Add license

remove the remains of DistortedBitmaps from DistortedNode

Bugfix for removeByType

Save PNG effect almost finished. Supporting App (hopefully!) completely finished.

What remains to be done: put actual saving of the Bitmap in a separate thread, away from the Graphics thread!!