Distorted Android

Minor cleanups.

Properly clean up static varaibles in the Effect classes!

Improve computation of the thickness of the postprocessing halo - should be independent of the size of underlying object now.
Still it is not completely ok, it appears to depend on the ModelView matrix (use the Effects3D app to rotate the object around Z-axis to see this)

MeshCubes: Correct texturing of side walls. Everything should be correct now.

MeshCubes: Correct texturing of side walls. (still not everything is right there)

Make the Effects3D app a bit more user-friendly.

Bugfix: make the Inflate distances equal in all 3 dimensions regardless of dimensions of the Mesh. (still MeshFlat's Z dim needs to be corrected)

Bugfix for the situation when we would be BLURring an object, then we remove the BLUR and apply a GLOW, then remove the GLOW and apply BLUR again - the second BLUR would assume the color of the GLOW.

Important bugfix in MeshCubes for the Inflate vectors.

Translate the size of the Halo around postprocessed objects from 'number pixels around the object' (as held in the Effects themselves) to a float suitable for Inflating the underlying Mesh with the per-vertex Inflate vectors.