Switch to side-by-side view

--- a/Allura/allura/model/attachments.py
+++ b/Allura/allura/model/attachments.py
@@ -27,7 +27,7 @@
         return self.ArtifactType.query.get(_id=self.artifact_id)
 
     def url(self):
-        return self.artifact.url() + 'attachment/' + urllib.quote_plus(self.filename)
+        return self.artifact.url() + 'attachment/' + urllib.quote(self.filename)
 
     def is_embedded(self):
         from pylons import request