URLs aren't properly encoded

dosage will fail if a f.e. a filename has a space in it. (f.e. {{{SchlocksMercenary}}} does that.)
to handle it correctly everything after {{{http://}}} should be quoted. (if you run {{{urllib.quote}}} on the whole string it will quote the {{{:}}} in {{{http://}}}).

A nasty solution I found was the following:
util.py:72 segments = urllib.quote(pu[2]).split('/')

This should probly be done a bit nicer.
(maybe removing {{{http://}}}, quoting it and adding {{{http://}}} again can solve it?)