update list of extract formats
fix usage()
no maptype functions
new type 'format'
better title
install new script bbbike-extract-format
workaround for lighttpd if-modified-since bug
Merge branch 'world' of ssh://git.bbbike.org/home/git/bbbike into world
get running: ./munin-bbbike-extract --type=format
cleanup /var/cache/bbbike regulary
show failed files
use 'set -o pipefail' later, so it will not fail for other commands, e.g.

`which pigz gzip | head -n 1`
Merge branch 'world' of ssh://git.bbbike.org/home/git/bbbike into world
indent: run cssbeautify on CSS
import forgotten changes by last indent
big refactor: reorder elements
documentation
spaces
margin tests
remove stale code