web/jump/urls.py: modify regexp for jumper

Now user can juery /jump/foo.i2p/anything and it will not produce
"unknown hostname" error, instead user will be redirected to
http://foo.i2p?i2paddresshelper=key

web/jump/urls.py

@@ -3,6 +3,6 @@ from django.conf.urls.defaults import *
 urlpatterns = patterns('web.jump.views',
 		(r'^error/', 'error'),
 		(r'^unknown/', 'unknown'),
-		(r'^(.+)', 'jumper'),
+		(r'^([^$/]+)', 'jumper'),
 
 )