jadized the current html
sassified current css
fix some style issues
remove currently unused code from mat4

methods removed:
copy
identity
transpose
adjoint
determinant
mul
scale
rotate
rotateX
fromRotationToTranslation
fromQuat
frustum
perspective
ortho
lookAt
str
[exporting]
some comments in js
move colors into variables
b/w style
small improvements
icons, usual and social