barrier.wrl: Added intermediate file in world/wrl.
Set avatar's radius to 0.1 to climb through narrower spaces.
Removed smaller barrier from lightroom because it's not present in pictures of Bell Rock.
Lightroom: precised dimensions of masonry and cage; removed edge smoothing on masonry (octagon); added explanations.
More detailed roof
Removed reference to apartment.wrl (a file removed earlier).
Removed redundant inline of barrier.
Separated lighthouse balcony in a new file. Includes lightroom and barrier.
Added bells on balcony.
Reformatted crossSection in lighthouse-body.wrl, added explanation.