Adding shrinked version of the images

Performance increase was the motation, although it might not have been
that effective. The resizing was done with FastStone Photo Resizer.
Unfortuently, all the originally non-jpg files became jpg in the
shrinked version. As a result, some textured will not be applied.
"Removing" idrettsbygget

It is very large compared to its physical size. The file is actually
renamed  to "Grp 8 Idrettsbygget.js.dontUseNow", but the adding of the
new file seem to have been added in last commit.
Updating of fileList
Adding option for not using the building textures

Instead, color the buildings grey. Setting face:THREE.DoubleSide did not
help, regarding the missing wall problem.