Make it a bit easier to work on website

`python make website` gives the commands you can use, but also
emmediately clones the website repository

`python make images` clones the images repository so that the
website builder can build the gallery.
FIX: Fix test
Modular shader fixes
flakify
Merge pull request #315 from lcampagn/shader_fixes

Shader fixes
Added camera example.
Removed old code in camera example.
FIX: Fix commenting
Fix rotation in mesh example.
This is done by disabling transform simplification in ModularVisual;
this should be re-enabled when that system is working again.
flakify
Merge pull request #324 from lcampagn/mesh_example_fix

Fix rotation in mesh example.
Merge pull request #322 from Eric89GXL/minor-tweaks

FIX: Fix commenting
FIX: Fix initialize events
FIX: Fix event order
Updated camera example.
STY: Better comment
Merge pull request #332 from Eric89GXL/fix-init

FIX: Fix initialize events
Merge pull request #319 from rossant/camera-example

New camera example
WIP: Add JFA example
FIX: Filename