remove useless functions
drapePoint refactored
use drapePoint function to drape POIs
CameraContainer class comments
Scene class comments
POI - Picto fill right the panel (fix #37)
POI - Picto fill right the panel (ref #38)
POI - White Sphere on POI position (ref #38)
Merge remote-tracking branch 'origin/master'
POI - Pictogram's self shadows removed (fix #33)