first replace of static urls with url_for()
first replace of static urls with url_for()

This is much cooler, because you can ignore the urls - or fix it later,
the code will set it for xou. Its also very easy to handle variable
parts with it - and in blueprints its even easier to use, because
tuff before the dot.

lukasjuhrich/pycroft,agdsn/pycroft,agdsn/pycroft,lukasjuhrich/pycroft,agdsn/pycroft,lukasjuhrich/pycroft,agdsn/pycroft,lukasjuhrich/pycroft,agdsn/pycroft