Allowed gzipped html files to be servered by dxr/app.py. 

The CMS experiment offline software is almost 1 GB of source code. When I created the dxr index it ended up being 13GB with a 1.3GB xref database. I gzipped all of the htmlized source code files and made this patch to allow the server side to display them correctly. 

I also ran into problems during the csv import stage so I increased the csv field buffer to the max. This and the addition of the default wwwroot  can be skipped.

The prototype index for your software can be found at

http://cmslxr.fnal.gov/dxr