change image fitting (test)

if i fits then i... LOOK AWESOME!
remove mobile image max-height
Coki Showcase
Revert "Coki Showcase"

This reverts commit f4f0e7b75aea13f49639b7fd2df261256f73395f.
z-index Pfusch

A "Pfusch" is a piece of work done without any plan. In our case i just
played around with some z-indices, because I was unable to select text
on products and services. I don't know why it works now, but it works.
chrome flicker fix
add modernizr cssfilters test
add pfuschy sidebar no-filter fallback
change no-filter fallback spacing and fomt-size
fix