Added the review status to the list display

You can now see if a patch is WIP or under another status.

- Fixed an issue where I got an error if limit was None. Checking the
  value before using it.

- Added a basic test harness with tox to run a couple of commands.

- Removed distribute from the requirements.

FIXES #1 #2
Merge pull request #3 from d0ugal/master

Added the review status to the list display