Fix reference file loading by url
For some reason there is no Content-Type
key in the object returned by
urllib2.urlopen().info()
. However, the gettype()
method seems to
work.
I have no idea if this code ever worked, and if so, why. Also, the check
for the text/plain
content type is pretty bogus in my opinion. A
server can say whatever it likes and valid GenBank files may well be
served with different content types.