add cloud picture based on cc/gfdl photo by "Huhu Uet"

source: <https://commons.wikimedia.org/wiki/File:Schäfchenwolke_(Cumulus_humilis)_01.jpg>
#cleanup
add weimarnetz example
example fixes
update theme, add fixed transparent clouds to body

- weimarnetz specials: .alert-unlock, .jumbotron-special
#dist
load only used fonts
#dist v0.0.2