Cleaned up many files
Removed unnecessary files
Revert "Removed unnecessary files"

This reverts commit a904d4a8a05d47dfa47547d99be7de4f563e7293.
Added FPS measuring means

Added fps.wrl and index-fps.wrl.

fps.wrl downloaded from:
http://dcgi.felk.cvut.cz/home/zara/PGR012/fps.wrl
index-fps.wrl simply inlines index.wrl and fps.wrl. It displays the
scene and prints FPS into console.

On my computer in Cortona 3D, it's necessary to hide the console after
the simulation starts in order to display the FPS values.
Lighthouse body: Prototyped, added LOD

Made the lighthouse body a prototype. Added a togglable LOD feature with
3 levels of detail: original extrusion, plain cylinder and empty node.
Several improvements
Defined window as prototype with 2 levels of detail.
Added LOD for window glass pane. Also added other parameters: size, color, transparency.
Glass panel: Removed obsolete disabled line.
updated models
Increased range of glass panel disappearing to 200.
Added BarSquare for generic solid bars with LOD. Replaced Wood in window with BarSquare.
Added exported from blender
BarSquare: Added comments to parameters.
Glass panel: Changed title to Glass panel (removed mention of lightroom window).
Glass panel: Added comments to prototype parameters.
Window: Added comments to prototype parameters.
Merge branch 'dev' of https://github.com/filipbartek/vrgame into dev
Prototyped lightroom cage (with LOD parameter).
updated models