Distorted Android

Make the Effects3D app a bit more user-friendly.

Progress with Inflate (building block of postprocessing effects: the proper way of marking a halo around a Mesh)
'Inflate' app testing the machanism. MeshFlat appears to be working, now we only need to fill up the per-vertex Inflate vector in the MeshCubes.

Added a new attribute to vertices of a MeshBase object: the vec3 'inflate' vector.
This vector describes the direction where the vertex needs to be moved when we 'inflate' the whole mesh.
If the mesh is locally smooth, this is simply the normal vector; otherwise (for example in the corners of the MeshCubes) - not....

Fix the preprocess shader. This makes the 'Postprocess Tree' app look good again.

Progress with thr Glow effect - moving glow app looks ok now.

Progress with a more generic 'preprocess' stage of Postprocessing Effects.

Hide the FBO_QUEUE thing inside the library. The queue is running internally now, without public setAsOutputFBO() thing (simplifies writing postprocess effects)

Simplify Main OIT shader.

Fix the fact that back-facing surfaces were invisible.

Largely fix the non-postprocessed OIT. Still, one problem remains: back-facing surfaces seem to disappear (visible in 'Cubes')