Hide intensity slider for rotate and drag tools.
Factor stuffs for history (states) management).
No subdivision if slider set to zero.
Add orthographic camera + updatebuild+jshint happy.
...oups fix wrong name function.
Add exportPLY method
Add export to ply button. Close #14
Merge pull request #15 from disjukr/master

Export model as ply format
Add fov slider.
The camera can now rotate around the picking point...phiou!.
Add normal shader + update manifest-build+few fixes.
Code clean up.
Fix normal shader + rename variable in camera.
Replace normal shader...
Do not use camera pivot by default + update build.
Add back screenspace normal shader + small fix for camera reset.
Merge pull request #4 from stephomi/master

merge stephomi‘s code