When I try to get history of a page, I get an error complaining that git whatchanged' is nominated for removal.


Reproducible
============

Always

Steps to Reproduce
==================

1. Open gitit in a browser
2. Navitage to "history" tab of any page (or use "recent activity" feature)

Actual Results
==============

I get an error page:

```
Happstack 7.8.0.2

Something went wrong here
Internal server error
Everything has stopped

The error was "UnknownError: git whatchanged returned error status. 'git whatchanged' is nominated for removal. If you still use this command, please add an extra option, '--i-still-use-this', on the command line and let us know you still use it by sending an e-mail to <git.org>. Thanks. fatal: refusing to run without --i-still-use-this "
```

Expected Results
================

History page is shown.

Additional Information
======================

This is a bug in ghc-filestore already fixed upstream,
and tracked downstream in fedora as bz 2390539.

I assume we just need to rebuild gitit when the bz 2390539 is fixed.