Distorted Android

Rubk App: improve 4 buttons in the top.

Rubk App: add 4 buttons in the top.

Further improvement for the Generic app.

Refactor the 'Generic' app.

Rename the 'Effects3D' app files.

Rename the 'Effects3D' app.

Make the Fragment effects truly 3D: change their 4D 'region' into a 3D 'center' (a point in 3D) and 3D 'region' (which is now a set of 3 radii defining an ellipsoid around the center)

Also corresponding changes to the applications.

Advances with the Earth app - prepare it to checking if any FRAGMENT or VERTEX effect correctly works on a Sphere mesh.

Progress with the 'Earth' app.

Rename the old 'Cubes' app to 'Inflate' - this now combines the testing functionality of former 'Cubes' and 'Inflate' apps.
The old 'Inflate' in turn renamed to 'Earth' - here we are going to show an Earth rotating in space.