Moved wrl files one level down to wrl subdir, except index.wrl.
index.wrl: renamed title to Lighthouse from Majak.
Moved barrier.wrl to blend directory because it's exported from Blender.
Moved reflector.wrl from placeholder dir to wrl dir.
Moved smeaton.wrl to blend dir because it is an export from Blender.
Removed island.wrl because it's not used nor implemented.
Moved floor.wrl to blend dir because it is exported from Blender.
Removed apartment.wrl because it's not used nor implemented.
Renamed chandelier.wrl to lightroom-chandelier.wrl.