Commit splitted due to rename detection. See next commit for Message.
1. Cleanup:

- removed "ActivityLibrary1"
- removed "Fusee.wiki"
- removed "Tests" from .sln
- removed JSILBinary from .sln
- removed "Test" example
- removed "input.js"
- removed "BulletSharp" example
- removed unnecessary references
- removed "App.config" from Simple example
- grouped Xirkit + WebXirkit
- updated LICENSE
- updated Fusee_Windows.targets for Input + Xirkit
- fixed project dependencies
- fixed cpu configurations
- fixed some broken comments
- fixed ParticleEmitter shader to work in web
- fixed asset path in example InputDevices
- moved WebInput project to src/Imp/
- moved web implementation of WebInput into WebInput.js
- renamed "BulletTest" to "PhysicsTest"
- cleaned KeyframeAnimationTest example
- most recent submodule:
> fuHTMLGen 1.1.5.0: added WebInput and XirkitScript
> changed .jsilconfig to work with protobuf

There are still problems. More cleanups to come:

- GUIText is upside down in ParticleDemo in web
- particles stop spawning after a few seconds in web
- at least one outputpath seems to be wrong
- project files should be checked and compared
- project dependencies should be checked and compared
- background texture in ShaderDemo is broken in web
- Gendarme should be use used to find problems
- there is an unused project "Physics" in src/Engine/Examples
- etc.