core: keys: bind page Up/down to viewpoint zoom in/out
core: keys: bind page Up/down to viewpoint zoom in/out

ACTION_ID_VIEWPOINT_FOV* are not bound anymore

xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc