So I tested and this isn't returning any results anymore... I switched to master and I see the URL it is constructing is:
```
/crashes/signatures/product/Firefox/version/26.0/end_date/2014-02-06/duration/168/limit/50+100+200+300/
```

So I need to look and see exactly what the mware ended up doing here, and pass that in as the limit. We don't need to worry about ```settings.TCBS_RESULT_COUNTS``` here AFAICT, this isn't a value being passed by the user, it is hardcoded for the purpose of this view/report.